Nice job hitting that gameboy vibe! :)
Jackie Chan kicking dinosaurs in the face is pretty hilarious!
I got quite frustrated by the fighting controls - I kept dying because kicking doesn't work when you're moving. An idea: what if hitting "J" or "K" overwrites and interrupts Jackies movement? That way the player still can't move while fighting, but accidentally moving while fighting doesn't result in instant death. That would make it quite a bit easier for me at least :D