Overall, very fun and addictive!
First off, I'd like to say that I am a huge Mausland fan. I still play Aggressive Alpine Skiing all the time.
This game was just as quirky and addictive as all their other works, and I enjoyed it very much:
Graphics: 9 - The graphics where simple and fun, cartoonishly exaggerated and although original, always felt like you knew them from somewhere before. Nicely done.
Style: 10 - You don't see many games where this kind of spin it put on it, and I especially loved the combination of action and RPG elements. Was almost a 9 for the 2 minor spelling errors ("Rosty" instead of "Rusty" and "Acess" instead of "Access") , but whatever, it added to the charm.
Sound: 8 - The main level's music loop seemed a bit off, but no big deal, and when fighting the Bison-Demon, that "Yelp!" noise got pretty annoying after about the 10th time I fought him, but overall the sounds fit right in with the theme.
Interactivity: 7 - Although the controls where good, it seemed like it was easy to get the game "stuck" halfway between modes, especially when using the ring at the musician guy's house. At one point I was staring at an empty house and the arrow keys apparently where moving me around the game regular game world in the background, because somehow I could talk to people as thought I was walking by them. Another time I got stuck without the ability to use any keys except the R key for the ring, which would take me into the demon house from anywhere. Loading a saved game seemed to clear it up, so save before you do important things like boss fights (you should anyway!) and don't try to do 20 things at once because the game can get "confused".
Humor: 9 - A crazy derby-wearing, pizza-delivering ostrich runs around a world of knights, magic, alligators in kiddie pools, giant mushrooms, and a friar who lives in a run-down camper because a leopard demon destroyed his church. If that isn't amusing enough to have you hooked, you are to serious for your own good.
OVERALL: 9 - This got added to my Newgrounds favorites, which is no easy task. A well-produced game, fun, and addictive. Has a few little issues, but more than makes up for it in good-ol-fashioned awesome.
Now, if you'll excuse me, I'm going to go venture behind the rainbow and see what that is all about. (And no, I haven't resorted to the walk-through yet!)