Here is the full list of all 36 Peace Data achievements.
First launch
Quit the game
First death
Kill the first melee enemy
Kill the first enemy with a handgun
Complete the first floor
Kill the first boss
Kill the first enemy with a submachine gun
Complete the second floor
Kill the second boss
Kill the first enemy with a shotgun
Kill the first sniper
Complete the third floor
Kill the third boss
Kill the first enemy with an assault rifle
Complete fourth floor
Kill the fourth boss
Buy first weapon
Buy first aid kit
Buy the first body armor
Buy first ammo box
Start upgrading health improvement
Start upgrading speed improvement
Open your first chest
Buy paper airplane
Change the language in the main menu
Complete Health Improvement
Complete Speed Improvement
Complete fifth floor
Kill the fifth boss
Inspect the ending
Activate easter eggs in browser