4. You could lvl up agin and the gain could be you gain the power to move at super speed and are invincable for 3 seconds when you press the space bar, the attack charges when you collect special tokens.
5. there couold be alevel where you have to destroy a robot and the only way to hurt him is to slam him while invincible from lvling up earlier, you have to hit him 3 times, he shoots fireballs if you get hit your charge for the attack goes down. tokens randomly appear to help charge your power.
i loved the game but i think it could be made better ifyou put a few more levels, here are my ideas:
1. You coud have a level with laser beams that go off and on, if a laser hits you you start back at an area before the lasers, to win you must get to a door past the lasers.
2. have a level were you have to collect a few pig shaped tokens to make the door appear and there could be a giant evil boar that follows you arround and if he hits you you lose your pigs and you have to get them again.
3. you could have a level where there are a bunch of fans,the fans blow you into a room that you dont want to be in. you have to move fast to pass the fans.