Here is the full list of all 13 CRSED: F.O.A.D. achievements.
Kill 7 players in one battle
Loot at least one of each Regular, Premium, Tactical and Royale fridges in one battle. You have to take out all the items from the fridge for it to count
Win 3 games in a row
Win a battle without killing anyone
Get at least one hit with each of listed weapon type in one battle: rifle, assault rifle, submachine, semiauto, shotgun
Do 4 headshot kills in one game
Kill 3 enemies at the same time. All kills should be within 10 seconds time from first to last one
Kill 3 players with grenades in one battle
Kill 4 enemies at the same time. All kills should be within 10 seconds time from first to last one
Loot your first gun
Get your first kill
Win your first battle
Play 100 hours in battles