Cute character!
I had trouble with the platforming and combat aspects of the game. I didn't make it very far and touched lots of grass. The controls felt very clunky in full screen for some reason. It was better in normal res, still very difficult and frustrating for me to maneuver the player. The attack didn't make much sense to me and I didn't understand the different colored crosshairs. The save mechanic also only seemed to kill me because the grass was over the save point. I wasn't sure how saving was useful. The trap door with the button closed before I got there many times.
The key doors worked really well! Keep with it! The fish enemies were also cute.