You will automatically get these achievements while playing through the story mode hence they are unmissable.

Golden Ticket
Reach the VIP balcony



The Adventure Begins
Escape the clutches of AIM in New Jersey



Lost But Not Forgotten
Discover the location of the Chimera



A Little Bit Broken
Recruit Bruce Banner



From the Ashes
Recover the SHIELD Protocols



No Suit, No Problem
Recruit Tony Stark



Patent Violation
Destroy the AIM arc reactor



Gone To Ground
Locate the Ant Hill



Itsy Bitsy
Recruit Black Widow



A Novel Way to Travel
Rescue Inhumans from the research facility



Thunderous Applause
Stop the Helicarrier from crashing into New York City



Unparalleled View
Reach the AIM space station



Welcome Back, Old Friend
Rescue Captain America



Avengers Assemble
Reunite the Avengers



New Girl Makes Good
Defeat MODOK and the Kree

And That's How It's Done
Defeat 10 or more enemies with a single Heroic ability activation


You will get this achievement while playing through the campaign when playing as Hulk for the first time. (insert gif)

Rough and Tumble
Reach a combo of 20 hits or higher


You will most likely get by the end of the campaign anyways. A really easy place to get this if you're struggling is in one of the character HARM training rooms, as part of them include a large group of weaker enemies that will infinitely respawn if you don't defeat them with your support ability.

Fundamentally Flawless
Defeat 50 enemies with Assault Heroic or Ultimate Heroic abilities


You will get this achievement while playing through the campaign.

Team Player
Reach Hero Level 5 with 5 different Heroes


You will get this achievement while playing through the campaign.

Time to Shine
Reach Hero Level 50 and purchase all skills for any Hero


This is a simple achievement, level up and perk up. It will unlock while doing the other grindy achievements (Assignemts, Hives, Villain Sectors, etc ). Every hero has 50 abilities to upgrade in 3 different sections (Basic, Special and Master) and you'll need to level up at least to level 15 to unlock them, by the time you reach 50 you'll get all the required points.
https://www.youtube.com/watch?v=fdTHSFV6jdA

Back in Business
Earn a total of 250 Hero Levels across the entire Hero Roster

Each hero in the game can reach a maximum of Hero Level 50. This is based on XP as opposed to Power Levels which are based on your gear. There are different number of characters depending upon your platform so you choose to level up is up to you, any combination works as long as your hero levels add up to 250. Attempt this while doing other grindy missions.

Become Legend
Equip all Legendary or better gear with any hero


As with most loot-based games, the rarest items you can get in the regular loot pool are Legendary (yellow). You'll get plenty of legendaries by the time you've done everything else. When you have one for each, just equip them all at the same time and this will unlock.
https://www.youtube.com/watch?v=9o6xam4BmQI

On the Mountaintop
Reach Power Level 150 with any Hero


To save time with this trophy, refrain from power boosting any gear until you get level 130 gear. You can boost your major artifact but only on the character you're intending to get this trophy with.
As you collect & equip higher power level gear, you will discover gear with higher base power levels (usually within a few levels of your current power level).
To reach level 150, you will need:
- All your equipped gear will need to be either Epic (purple), Legendary (Yellow), or Exotic (Orange).
- Each gear piece will need to have a BASE power level rating of 130. (a potential of 10 upgrades levels will make it 140)
- You need to equip & upgrade a major artifact to +10 (base of +1, boosted 9 times) as that will give you your final 10 levels between 140-150. (Major artifacts boost your overall power level rating +1 for each upgrade)
- You will need to upgrade each equipped piece of gear (including the two minor artifacts) to power level 140.
Upgrading your gear from 130 to 140 will take increasingly more resources, which is when the gear vendors & faction vendors will finally make themselves useful. Besides simply collecting resources from strongboxes, enemies, & mission rewards, you will be able to use fragments to purchase resources that you need to upgrade when you need "just a little more" to be able to upgrade gear to the next power level. Overall, it can be a little bit of a grind on these last 10-20 power levels, but if you pick one main character to use for the main mission chains, you should be able to easily get this achievement in the process of completing the other achievements.

Muahahahahaha!
Fully upgrade a major artifact


Major artifacts are unlocked only through progression and are automatically given to all characters once earned. Unlike other gear that have power levels, major artifacts give a +1 to your hero's overall power level, up to a maximum of 10.
Requirements for maxing out an Artifact: 12,806 Fragments; 640 Polychoron.
Unlike other resources, Polychoron can't be farmed endlessly. The only ways to get it other than occasional progression is through faction assignments and daily villain sectors. As it can take a while to get Polychoron, make sure you're only putting it into one artifact! Powering your other characters a bit can be tempting but it's not worth the extra grind you'll have to do to get one artifact up to 10.

Investing in the Future
Fully upgrade any gear item


In order to upgrade an item, it must be epic (purple) or higher rarity, and at least power level 100. You also need a second piece of gear that meets the same requirements but is also higher level than the first piece and is also the same type (ie. goes into the same slot). You can then upgrade the lower power level item up to the same level of the second item by sacrificing it - an amount of fragments and upgrade modules will be needed depending on the power gap between the items.
For this achievement, you now need to upgrade an item to power level 140 or higher.
Example 1: You upgrade a level 136 item to 140 with a 140 you found dropped.
Example 2: You upgrade a dropped item at 140 with a dropped item above 140.
https://www.youtube.com/watch?v=c1NF3czF0Ds

Prized Collection
Collect a full comic set


Story Related and Cannot Be Missed. This will be the very first trophy you earn in the game.

Odds and Ends
Collect three Artifacts


Artifacts are a type of gear, you have minor Artifacts that you can find fairly often in some strongboxes or as mission rewards and major Artifacts. You will most likely unlock this while finishing the campaign.

The Best Defense
Collect 20 different enemy codex files


Story Related and Cannot Be Missed.

A Surprise Every Time
Open 100 strongboxes


There are a good number of strongboxes around, depending on the type they can give you gear, resources and more. You will most likely unlock this while finishing the campaign.


Wanting for Nothing
Collect 500 gear items


Gear is how you power up your heroes and given this is a game revolving around looting, you're gonna get a lot of it. You will most likely unlock this while finishing the campaign.

Information Overload
Collect 50 intelligence files


Intelligence Files provide some background information to the story. There are two ways these can be found. During the story, some intelligence files will be found laying around in your path. There are also some laying around in the Chimera and Ant Hill hubs. You also have a chance to get files randomly from strongboxes. Open as many strongboxes as you can while going for other trophies and you should get this naturally while going for other trophies.

Treasure Trove
Open 50 Cache strongboxes


Cache strongboxes are the rarest type of strongbox, they have the SHIELD logo on top and often grant Vault missions. They are rare enough that you'll likely need to farm this.
https://www.youtube.com/watch?v=1dzUe0_wyA0

Savior of the People
Rescue 100 AIM prisoners

This is one you may have to go out of your way for. In some missions there will be AIM prisoners to save. Some of these are objectives and require destroying their cage, some can be found behind locked doors which require button presses or similar to open.
https://www.youtube.com/watch?v=_ejgzWgfoPw

Trying on Perfection
Earn a 100% rating on a mission without any team member being downed


As long as you're not playing on a harder difficulty than you should be, you'll probably get this without trying. To earn a 100% rating on a mission, you must get 5 stars on every section of it.

Seeing Stars
Earn a five star rating on an objective without any team member taking damage


There are numerous simple objectives throughout the game you can get this on and will probably get this while finishing the campaign.

More Important Things To Do
Complete any mission in under three minutes


As long as you don't mess around in the Chimera, you can get this after the Missing Links mission by heading straight for the HARM training hangar. If you didn't get it here, Drop Zones will be the way to go as they consist of only one objective, especially sabotage ones.

Super Hero Business
Complete 10 assignments


Assignments first become available shortly after getting the Chimera up and running. You obtain them by talking to the SHIELD contact on the Helicarrier and later on you'll unlock a second, Inhuman faction contact when you reach the Ant Hill. There will be 10 available from each contact every real life day. For the most part, the assignments are fairly straight forward and will come just by playing, defeating certain enemy types, countering attacks etc.

Gold Star Success
Complete 100 assignments


Assuming you're completing all twenty assignments available to you each day, this will take a minimum of 5 real days to complete.

Breaking and Entering
Break into 30 Depots


Depots are the rooms you need to solve a small environmental puzzle to get into which usually contain a strongbox or prisoner. Open 30 of these depots to unlock this trophy.
https://www.youtube.com/watch?v=Tb6cbk9CB9g

Clear Skies
Complete the "A Global Offensive" mission chain


A Global Offensive is one of the mission chains available in Avengers Initiative and acts more as a tutorial for factions and warzones. First you'll have to visit a few people on the Chimera and get some faction XP, then you must do the same in the Ant Hill. Finally, you will be tasked with completing a War Zone in each area along with a couple of other objectives that should come naturally. https://youtu.be/jwiUeQ4obNE

Old Fashioned Beat Down
Complete HARM Challenges I to V


The HARM Challenges are rooms consisting of 10 waves each, featuring many types of enemy. When you first unlock them, they are definitely doable but may be tricky for some, even on Challenge I. However these Challenges have a max mission power of 100, meaning if you hold off on playing them until you have a high Power Level character you can save yourself a lot of grief and breeze through them.

Honeycomb Hideout
Complete five Hive missions


Hives are unlocked through post-story mission chains and consist of 5-8 floors of random objectives. They take 15-20 minutes each to complete so you're looking at a lot of time just for this achievement though it’ll help with increasing your XP and Power Levels if you still need them. You can endlessly replay the introductory Hive (Let the Games Begin) for this achievement. It only has 5 floors and if you play on Challenge I with a maxed out character, you'll be well over-levelled making it a breeze to get through, albeit boring.

To the Dark and Back Again
Complete 50 Hive missions


See Honeycomb Hideout.

Truly Elite
Complete an Elite Heroic Hive


The Elite Heroic Hive is the very last step of the Reigning Supreme mission chain in Avenger Initiative. This is similar in gameplay to the regular hives, you must complete floors with randomised objectives. However, there are 14 floors to this one, and if you die outright (three downs), you must have another hero with a sufficient power level to replace them or you must start from scratch. Unfortunately this mission is single player only so you can’t take advantage of infinite revives there either.

Former Glory
Complete the "Iconic Avengers" mission chain


As you progress through the story and unlock more heroes, you will unlock a mission chain for each that will reward you with an iconic costume for them. These chains are fairly straight forward. Most heroes have two missions to complete, with some global objectives sandwiched in between. These usually consist of a couple of combat objectives and earning faction XP while playing as that character, which can be done by completing objectives. Iron Man doesn't have any missions and neither does Ms. Marvel but you must also complete the story to finish her chain. When you finish all six character-specific mission chains, nothing will initially unlock. You won't receive the overall Iconic Avengers mission chain until late in the post-story content, after completing step 6 of Reigning Supreme. The requirements for this chain are simply to complete all 6 character mission chains so assuming you've already completed those, the chain will complete as soon as it's unlocked and this trophy will follow.

Tentative Peace
Complete 15 Villain Sectors


Villain Sectors are first unlocked alongside assignments when you get the Chimera back up and running, though you won't have the required power level at first. They are similar to most missions where you have a variety of objectives to work through, except you fight one of the story bosses.

The Best Around
Earn a 100% rating for any War Zone at Challenge IV rating


Similar to Holding It Down, this trophy will be tricky if you try to go for it early but will become a lot easier if you're patient and wait until you're near max Power Level, you'll be stronger than the enemies in some missions. Once you find a mission to play on Challenge IV you'll also have to get 100% by not having anyone go down or without enemies making too much progress in some cases. Drop Zones consist of only one objective so can be done quickly and easily. Despite not giving you a star rating, character-specific HARM tutorials are a foolproof way to get this, because as long as you complete it on Challenge IV, the game will consider it 100% and award this trophy.

Holding It Down
Complete 30 War Zones at Challenge III or higher rating


Challenge III can be tricky to begin with as enemies will be more powerful than you. If you're patient, there's no need to make things harder for you early on as some missions, namely Drop Zones and HARM rooms, will stop scaling to your Power Level at a certain point, thus you will be stronger than the enemies.

Shopping Spree
Purchase an item from two different faction vendors


This one is pretty easy to pop and can be done after reaching Ant Hill. The two vendors will be the Shield representative in the Helicarrier's hangar Sidney Levine and Maddie Cho in Ant Hill. Purchase any item from both of them to unlock the achievement.

Group Effort
Reach rank 25 in any faction


There are two factions available in the game: SHIELD and the Inhumans. You level up the factions by completing assignments, daily Villain Sectors, some missions and rescuing prisoners. Depending on how many real life days you've played over and if you completed everything available on each day, you might need to specifically go for this after finishing everything else.