SWiTCH vs Evil-Dog Round 3 is not so hard, when you learn how to play the last part(s) of the song (same with Presumed Dead kinda.) Also, try not to think about the length of the song, it's over really fast when you don't.
Gallade: There's so many things wrong with your comment:
1. It's $7.50.
2. What's wrong with having new game + in premium?
3. There's many other things in the premium than that.
4. You're rating it 2/5 because of a little thing? Go home.
To hell with these noobs who don't even know a thing about the game.
Century22: There is a double jump powerup in W2. Yes, gravity can be reversed without touching anything by falling and then reversing it. The spikes aren't slippery.