Rage 5 times during a level

Obtain no money during a level

View the credits

Figure out how to unlock cheat mode

Lose the game by letting the cat get the pizza

Kill a boss solely with regular bullets

Buy all power-ups

Buy all bullet typess

Buy all rage forms

Finish the game without using power-ups

Collect all slices of pizza and become King of the Dog Planet

Have £1000 at the beginning of a level

Take no damage during a level

Buy 5 extra hearts