Here is the full list of all 30 Splitgate: Arena Warfare achievements.
Get a collateral kill with the Railgun
Win 50 matches
Complete 100 matches
Get 30 Pistol kills
Get 25 headshots kills with the Sniper Rifle
Get 10 First Blood medals
Deal 2,500 damage with the SMG
Get 10 triple kills
Get a quad kill
Earn 500 points in Domination
Earn 500 points in King of the Hill
Get 500 kills
Get a Portal Kill
Deal 50,000 damage to enemies
Get 15 kills without dying
Complete 25 matches
Win a game of Takedown
Destroy 10 enemy portals
Get 50 headshot kills
Get 10 kills without dying
Get 25 double kills
Get 25 kills through portals
Get 25 Revenge medals
Deal 10,000 damage to enemies
Complete a match
Get 5 kills without dying
Win 1,047 matches
Get a collateral kill with the Sniper Rifle
Deal 500,000 damage to enemies
Get the round-winning kill in Takedown 50 times