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