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