Really fun game! It didn't blow me away at the beginning, but I ended up having a ton of fun! I really liked the concept of gathering up weapons from the environment while dodging enemy fire, and then firing back yourself while running around like a madman! The goofy story was great and made me want to keep going just to see what insanity would be next.
I do feel like the levels were designed in a bit of a weird way where the really good stuff (boss battles) is kept at the very end and it peaked a bit too early upon reaching that. Just as I was getting a little bored from the normal levels, suddenly it introduced that super cool cannon boss that was incredible to fight! I expected that to actually be the ending, but then it introduced a boring castle afterwards, only to suddenly have another super boss, and so on! Maybe sprinkle the bosses in a little earlier to hook and space them out a bit more to keep the player going (though you do have an alright hook through the story with the whole princess business). Also, I felt like the whole 'like for 200 spears' was really weird and unnecessary as I didn't want a way to cheat around the interesting core mechanic of tactically gathering ammo myself.