Kill 1000 enemies with machine gun in any single game mode
Complete 5 rounds without dying
Complete 15 rounds without dying
Beat the target Combo for all levels on floor 01!
Beat the target Combo for all levels on floor 02!
Beat the target Combo for all levels on floor 03!
Beat the target Combo for all levels on floor 04!
Beat the target Combo for all levels on floor 05!
Collect 3 stars on every level of floor 1!
Collect 3 stars on every level of floor 2!
Collect 3 stars on every level of floor 3!
Collect 3 stars on every level of floor 4!
Collect 3 stars on every level of floor 5!
Dash into a frozen face hugger enemy on the ground
Unlock all weapons in arcade mode
Unlock all powerups in arcade mode
Unlock all perks in arcade mode
Kill 1000 frozen enemies in any single game mode
Kill 1000 enemies with the gatling gun in any single game mode
Kill 1000 enemies with the laser beam in any single game mode
Kill 1000 enemies with the rocket launcher in any single game mode
Kill 1000 enemies with the chain lightning gun in any single game mode
Survive 45 seconds without shooting on level 6 in HARD
Survive 30 seconds without shooting on level 9 in HARD
Survive 60 seconds without shooting on level 22 in HARD
Don't let the spider touch a scientist on level 10
Don't let the spider touch a scientist on level 8
Don't let the spider touch a scientist on level 21
Don't use any powerup in level 6
Don't use any powerup in level 12
Don't use any powerup in level 18
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