This is a castle crashers like game that i find really fun. The worm boss was pretty hard but i figured out how to beat it. The bear is not as hard as the worm but more annoying.
How to kill the bear: Stand up close to him he cant hit you the only attack he can hit you with is the spikes or the rocks.
The worm: Stand at a direct angle so you can hit him and he cant hit you.
The ninja: Just stand close to him he is the easiest boss.
Double ninjas: Throw the octopod and they will throw it on eachothers face untill they die if it gets off them just do it again.
Thats pretty much how to beat the bosses. But its a great game it gives me that fun castle crashers feeling. 10/10 5/5.
Hope to see more of this :D.