Here is the full list of all 24 Enemy Remains achievements.
Break ten crates for their loot.
Break one hundred lootable crates.
Break five special metallic crates.
Break fifty special crates for their loot.
First kill for both players in co-op.
Solo playthrough with Normal difficulty.
Regular playthrough with Harcore difficulty.
Single-player playthrough of Hell difficulty.
Pistol kill with both players assisting.
Kill an enemy with an explosive barrel.
Kill an enemy with a mine trap.
Kill an enemy with a tesla trap.
Playthrough with Normal difficulty in Co-op multiplayer.
Hardcore difficulty playthrough with both players.
Hell difficulty playthrough in couch co-op.
Play through all levels with 100 % vitality.
Playthrough of all the levels with both players having 100 % vitality.
Discover all the hidden secrets.
Killing the first enemy.
First boss monster killed.
Acquire a full inventory of regular weapons.
Acquire all the weapons in Survival mode.
Get 10K points in Survival Mode
Kill the Butcher Hog boss.