Level 4 is so easy compared to level 5. I've gotten through it before, but I just can't seem to do it now. Maybe I'm just a little out of practice. But level 5 is still terrible. Stupid wall jumps from hell. Freakin' gears EVERYWHERE that cause damage. There are some parts that I don't think are even possible to get through without taking a hit. But, then again, maybe it isn't as hard as I think. Batman is really difficult at first, but with practice it can be easily mastered. I used to think the second level's boss was impossible, but now it's incredibly easy to beat. Same goes for all of level 3 and 4. Stage 4-3 was especially difficult the first few times through.