Preh-T good
The climbing/jumping was AWESOME and the arrow mechanic was AWESOME. The game was great, but it had some weird issues.
1. WTF? you have to pick up coins in keep going?
The game should just make you sneak/ fight your way tot he end.
2. wtf is up with the weird floating walls?' And the castle is just big maze!
My suggestion would be to make a sequel where you actually ASSASINATE someone. Don't just run around cload city picking up coins. Also, the backrounds/levels should look more like real areas. (sneaking your way up a tower to assasinate so-and-so. Different objectives could be fun too. On one level you have to kill a specific person, next level you have to steal something unnoticed, then you have to spy on a conversation, etc.
Good game. hope you make a sequel