Here is the full list of all 69 SCUM achievements.
The base game contains 54 achievements, and there are 2 DLC packs containing 15 achievements.
Kill 10,000 Puppets
Kill 100 Players
Win 50 events
Survive for 32 days on the island
Get 2,000 firearm kills
Survive for 24 days on the island
Get 3,000 melee kills
Reach 900+ fame points.
Survive for 16 days on the island
Kill 10 players.
Win your first event
Survive for 4 days on the island
Kill 1,000 Puppets
Get 100 firearm kills
Kill a player.
Reach 800+ fame points.
Reach 700+ fame points.
Reach 600+ fame points.
Reach 500+ fame points.
Craft a clothing item.
Get 200 melee kills
Kill your first animal.
Kill 100 Puppets
Light your first fire.
Reach 400+ fame points.
Reach 300+ fame points.
Reach 200+ fame points.
Get 10 melee kills
Reach 100+ fame points.
Kill a puppet.
Craft an improvised knife
Spawn on the island for the first time.
Kill 500 Players
Kill 1,000 Players
Kill 5,000 Players
Kill 20,000 Puppets
Get 30,000 firearm kills
Win 100 events