Clear Mission 1

Clear Mission 1 without taking damage

Stay idle long enough for the 2 black aliens to appear and kill them

Clear Stage 1 in Mission 4 using only the leap and running attack

Clear Mission 2

Clear Mission 3

Clear Mission 4

Clear Mission 5

Clear Mission 4 without dying on Normal difficulty or higher

Kill 20 aliens as Scooter with the high jumping attack

Clear Mission 2 without dying on Normal difficulty or higher

Clear Mission 3 without dying on Normal difficulty or higher

Clear Mission 5 without dying on Normal difficulty or higher

Clear Mission 6 without dying on Normal difficulty or higher

Complete the game with Karla

Complete the game with Gordon

Complete the game with Scooter

Complete the game using 4 credits or less on Normal difficulty or higher

Clear Stage 2 in Mission 2 without killing any alien and without taking damage

Complete the game using only 1 credit on Normal difficulty or higher

Kill 20 aliens as Karla with the leap attack

Kill 20 aliens as Gordon with the running attack