Explore beyond both fences in The Chemical Factory
Find the hidden room on Rooftops
Beat the game on regular difficulty or higher
Find both hidden health upgrades in one playthrough to get your health to 200%
Kill at least 2 Enemies Simultaneously with the AM Blaster
Kill at least 10 enemies with one Zodiac shot
Finish The Gauntlet on hard difficulty
Finish The Gauntlet on regular difficulty or higher
Finish The Chemical Factory on regular difficulty or higher
Explore the whole map, touch every non-health pickup, and kill every enemy.
Finish The Chemical Factory on hard difficulty
Finish Rooftops on regular difficulty or higher
Finish Jupiter Station on regular difficulty or higher
Due to a glitch where enemies can get stuck outside the map, this level only requires 99%.
Finish Mars on regular difficulty or higher
Finish Dream on regular difficulty or higher
Finish Rooftops on hard difficulty
Finish Jupiter Station on hard difficulty
Finish Mars on hard difficulty
Finish Dream on hard difficulty
Finish Triton on regular difficulty or higher
Finish Io on regular difficulty or higher
Finish Triton on hard difficulty
Finish Antarctica on hard difficulty
Finish Io on hard difficulty
Finish Antarctica on regular difficulty or higher
Finish Reactor on regular difficulty or higher
Finish Orbiting Habitat on regular difficulty or higher
Finish Orbiting Habitat on hard difficulty
Finish Prison on regular difficulty or higher
Beat the game on hard difficulty
Finish Prison on hard difficulty
Find the hidden rooms on Triton
Find the hidden area on Jupiter Station
Find the hidden areas in Antarctica
Find the secret weapon room on Io
Find the secret room on Io
Find the secret elevator shaft on Io
Find both hidden warp zones in Fortress
Find both hidden cliffs on Prison
Find all lower passages on Prison