In this route, you will mainly focus on becoming friends with the monsters you encounter
So that means no killing, so no "Fight" option, only "Act" and "Mercy" in fights. Healing if necessary

























First you will progress the story as normal untill you Toriel introduces you to the "Dummy"














With the dummy you will talk to him, as Toriel tells you to with the "Act" option

Going into the ruins you will encounter several fights. In those fights you cant use the "Fight" option, only "Act" or "Mercy". You can spare an enemy when they're name glows yellow, which means they can be spared.
All enemys have they're own way or being spared, which means some enemys will have a different kind of puzzle you will need to do untill you can spare them. Completing the puzzles will need you to figure out with the "Act" button, checking the enemy might give you a hint of what the enemy is like.

For example: Ememy - Froggit. You can compliment the froggit which he enjoys and then grants you the option to spare them.

Progressing trough, soon you will face on Toriel, obviously, no fighting. Alot of the main characters you will only need to choose the "spare" option over and over and over, untill they realise they cant beat you or they feel pity, then they're name will turn yellow and lets you spare.

After leaving the ruins, you will be introduced to "Snowdin", which includes more characters and more enemys that you will encounter along the path.

Note: You wont be needing to buy weapons, only armor for defence.

There are alot of minibosses you will encounter: Doggo, Lesser dog, Dogi, Greater dog
All need to be spared.

Final boss of snowdin will obviously be Papyrus.
Mercy him untill he grants you pity and then you can spare him. (Optional: You can go on a date with him)

After the fight you will be entering "Waterfall".

Minibosses: Shyren and Mad dummy.
Same as always, spare untill they grant an option to spare.
except the Mad dummy, you will actually need to use its projectiles to damage him (it will not kill him) At the end of the fight "Napstablook" will save you.

Next fight is undyne.

in this fight you will also need to spare. But if you get an option to "Flee" use it and walk forward.
you will need to do this a few times untill you reach hotlands in which Undyne will fall to the ground due to the heat. Give her a cup of water and it will count as sparing.







After undyne, you have entered the "Hotlands".
Progress trough the story, sparing enemys and completing puzzles
you will meet Mettaton, mercy him and thats all.
Minibosses: Royal Guards.
nothing special about them, just solve the puzzle and spare.

The next boss is Muffet.
same as Papyrus, spare untill she grants you a pity.











Soon enough you will be entering the "Core"

in there obviously sparing the normal enemys

After some time you will meet Mettaton (Mettaton ex)











Same as always, spare and spare and he will soon run out of battery (You didnt kill him)

After Mettaton you will go trough "New home" to "Asgore"













Now "Asgore" will take away your mercy option, so you will be forced to fight him (its part of the pacifist route)
But after hes down you will be granted the option to spare again.

Last but not least. Flowey.
this time you will only be able to fight, with the power of the souls you will beat it in a matter of time. at the end when Flowey is down, spare to complete the pacifist route.

Congrats you have finished the pacifist route.
But there is still some things you need to do.
Theres also the "True pacifist" ending
In which you need to enter "The true lab" in alphys laboratory in hotlands.

In the true labs, you will need to complete several puzzles with also sparing amalgamates.

After the labs, go "COMPLETE" the game again.

Plot-twist, this time you and your friends are all gathered in 1 place untill flowey ruins the moment.

After you know it, you will be fighting "Asriel Dreemurr."












In this fight, focus on using the "Act" button.
In the second face, use the "Act" button again untill it changes and get the option to "Save".
After the fight, walk trough the barrier where you wake up and that will be the pacifist route complete.

Hope this helped.