Here is the full list of all 14 Operation Airsoft achievements.
Kill A Teamate
Join The Discord
Get One Kill
Get 100 Kills
Die Once
Die 100 Times
Just Click Play
Click The Menu Text
Get 5 Kills On A SpeedQB Match
Get A Knife Kill
Play A Solo Match
Interact With A Bomb
Pickup A Gun From The Ground
Help A Teammate With A Donation.