Here is the full list of all 20 The Culling achievements.
Reach 50 Mandroids defeated in Advanced Survival Mode
Complete the Basic Survival Mode
Win an offline match
Deal 200 damage in a single Online Match
Reach 20 hours of time alive in Online Matches
Win an online Team Match
Win an online Solo Match
Get 100 Career Kills
Travel 100 KM in Online Matches
Play an online Team Match
Play an offline match
Complete the Tutorial
Get 25 Career Kills
Get 10 Career Kills
Earn 400 FUNC in a single Online Match
Play 10 online matches
Call in a personal airdrop in an Online Match
Get 5 Kills in a single Online Match
Play an online Solo Match
Get 3 Kills in a single Online Match