• You have to activate all story clues in one playthrough in order to unlock this achievement. This includes all motion activated events, proximity based events (simply events), telephones, radios (the grey ones too) and TVs. I did not miss these, so I did not test it, but if you managed to unlock the achievement with missing some of the above, please let us know in the comments.
  
• You don't have to 'collect' maps, books and graffitis for this one, but since both would take a full walkthrough I recommend doing them parallelly (see my other guides mentioned below for those).
  
• The game saves after every motion activated event, however there's a bit of delay between the end of the event and the actual save. The current version of the game doesn't save anywhere alese, so keep this in mind when tracking the collectibles.
  
• Unfortunately there's no counter on how many 'things' you've triggered, so there's absolutely no way of knowing how far ahead you are and how many things are still missing.
  
• The game lets you miss ONE thing in order to unlock the achievement.
  
• You can backtrack to every missed thing until you enter the bunker at Little Tipworth. That's a point of no return though, so make sure you collected everything before entering.
  
• There are some required collectibles after that point, so you won't have a clue if you missed something until it's too late.
  
• There's been some reports on the internet that collectibles sometimes doesn't register during action scenes, so try to look at these after they've finished.

There are collectibles in game that give you a separate achievement. You don't have to collect most of these for Completionist, so to save bandwidth and memory I did not include them here, but I've made a separate guide for all of them:

• 30 Bittern books (actually only 12 differrent titles multiple times)
  
• 5 Chad graffitis
  
• 4 Microwave ovens
  
• 5 Unlockable gates of footpath shortcuts
  
• 31 'You are here' maps
  
• 24 trailers/campers/caravans you have to try to break into

The only exception is the radios, you'll need them here, but in order to unlock Radio Enthusiast too, you'd have to collect all of them before triggering anything else.

• 24 Red radios

Besides these you 'll collect the things below if you follow this guide:

• 29 Motion activated events
  
• 48 Proximity based events
  
• 17 Phones
  
• 2 Grey radios
  
• 5 Tape recorders
  
• 7 TVs
  
• 5 Computers

<coming soon with details>

• 1 motion activated event
  
• 1 proximity based event
  
• 2 phone
  
• 1 radio
  
• 1 computer

Note: Jeremy's story starts here, but the following collectibles are still at the observatory area according to the in game maps.

• 5 motion activated event
  
• 12 proximity based event
  
• 4 phone
  
• 6 radio
  
• 2 TV
  
• 2 computer

• 5 motion activated event
  
• 10 proximity based event
  
• 2 phone
  
• 4 radio
  
• 1 grey radio
  
• 1 TV
  
• 1 computer

NOTE: there's a red radio Frank and Wendy are listening to during this scene. You can't and don't have to activate it for any achievement (however, there's a book behind it).







NOTE: When you enter Stephen's house you'll hear Wendy searching for her son. You can't see her, so I didn't include this as an event, but you can't miss it anyway.

• 6 motion activated event
  
• 8 proximity based event
  
• 5 radio
  
• 1 grey radio

NOTE: the next 2 items on the backtracker footpath are located at Tipworth Forest according to the in game maps, but you can only enter this area after you reached the farm, so it makes more sense to include them here and approach them from the farm.

• 6 motion activated event
  
• 11 proximity based event
  
• 2 phone
  
• 4 radio
  
• 1 TV

• 5 motion activated event
  
• 7 proximity based event
  
• 7 phone
  
• 4 radio
  
• 3 TV
  
• 1 computer

NOTE: although you will find Mote 27 before Radio 24, it's worth getting the radio first so the game saves right before you enter the bunker.





NOTE: The requirements below are unmissable. Keep in mind that after you enter the bunker you can no longer backtrack to anything you might have missed.

• 1 motion activated event
  
• 5 tape recorder

If you've done everything, the achievement should pop after this


If you've missed only one thing, the achievement should pop after this


NOTE: You can see tape recorder 6 below the mote, but you don't have to and can't activate it