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.