Hardcore
Complete all levels in Hardcore Mode
30 
Bee
Beat the game using only the pulse laser on Normal or Hard
25 
Cockroach
Beat the game without dying on Normal or Hard
25 
Yars' Revenge
Defeated Queen Raktamalina
20 
Multiple-Madness
Get your multiplier above 100 on Normal or Hard
20 
Reaper
Beat a level in Hardcore Mode without dying
15 
Beetle
Beat a boss using only the pulse laser on Normal or Hard
15 
Gnat
Beat a level without taking damage on Normal or Hard
10 
Mosquito
Kill (1000) enemies with missiles
10 
Wasp
Kill (500) enemies with the railgun
10 
Boom!
Kill 20 or more enemies in one shot with the Zorlon Cannon
10 
Cloned
Beat every level in Co-Op Mode
10