I had fun with this one, I think you did a fairly good job translating a twin-stick shooter for gameboy controls. The fact that you fully stop in place when you shoot feels pretty clunky though. Maybe if you want to keep that type of mechanic it'd feel better to only slow the player down for a bit instead? It would keep that risk there but wouldn't fully take away the player's control.

Also, and maybe this was me misunderstanding a mechanic, at some point my shots just stopped doing damage (Or maybe were just doing very little). I was using the shotgun, and a single one of the ghosts tanked about 20+ fairly close range shots before killing me lol.

I could go for a whole game of this vengeful...plant guy...fighting ghosts with a gun that's bigger than them. One thing I might note is your game came up about 3/4 the size of my palm on screen and I didn't see a way to change the resolution, so though I really liked the game it was a little frustrating as I kept clicking off of it with my mouse and I also had a hard time seeing. I also don't know if I missed anything or if it was just the one level, but it would be cool to see different enemy or weapon types in a game like this, if you ever planned on developing it further!