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Kill 250 enemies with environmental hazards
Defeat Crab Puncher without getting hit
Kill 5 enemies with a single gunshot
Kick open the Coffin Rocket 20 times
Chain-explode 5 enemies
Complete any level while taking no damage
Hop on 55 heads in a row without touching the ground
Finish every level with the ranking "Dhampir"
Complete the game
Collect all the ancient vampire skulls