The menu buttons are glitched so that the "help" button doesn't work and "about" takes you to the game screen. Also, enemies "take over" when they're only half way to the "finish" line, making it so I'm only able to click one of them (specifically the right one, more info ahead). Also, the left turnip (?) is glitched and seems to be invincible for some reason.
The music is nice though, even if it doesn't loop, and the graphics are rather soft on the eyes. The sprite for the sword and the "pointer" have really weird outline glitches that don't seem to exist with any other sprite, so I'd look into that.
A solid start for a demo, come back after tweaking it a bit and we'll see where it goes.