Finish the first stage
Kill your 1st zombie
Hit 15 different zombies on Bonus Stage 1
Fill the power meter to the maximum level on Bonus Stage 2
Beat any stage without being hit
Find secret area
Kill a total of 250 enemies
Kill a total of 1000 enemies
Kill a total of 2500 enemies
Make a total of 100 special attacks
Make a total of 250 charged attacks
Finish the second stage
Beat a total score of 2 000 000 in one playthrough
Kill a total of 100 buried enemies
Finish the game as Chris
Finish the game as Hong-Hua
Finish the game as Jake
Finish the game as Liu Feilin
Beat any stage on Nightmare difficulty
Finish the third stage
Finish the fourth stage
Finish the fifth stage
Finish the sixth stage
Finish the seventh stage
Finish the game on any difficulty level
Finish the game on hard difficulty
