Here is the full list of all 29 Friends vs Friends achievements.
Get a duty-free ice cream
Reach super speed
Get a win streak of 25 matches
Get a win streak of 15 matches
Win 100 quick play games
Reach level 30
Survive a sniper headshot thanks to your helmet
Fall to your death again
Transform yourself into an Ice Giant
End a match with a tie
Reach level 20
Ignore gun safety rules in the shooting range
Open 25 booster packs
Shoot a rival's grenade before it touches the ground
Get a win streak of 5 matches
Win 10 quick play games
Reach level 10
Fall to your death
Reach level 5
Play your first quick play game
Win 1000 quick play games
Reach level 40
Open 250 booster packs
Unlock all the base cards
Max out all the base cards
Destroy 25 hearts
Burn yourself alive with your own Karrotov
Use Swap Weapons after a rival used Swap Weapons on you
Kill someone with a sticky bomb attached to your body