I would've liked an options menu or a title screen. Specifically a way to turn off screen shake. I can't tell if Ollie's weapon is terrible or if I'm terrible at using it but I was barely able to do anything as Ollie.
It also took me a minute to realize that I could press E to switch between them. I'm also not sure that the game is working as intended because the thing you're defending (Is it... a peach?) can break and the game just sort of continues anyway.
All of that said, it is a game where you shoot things and shooting things is kinda fun. I do like the sprites for Ollie and Moona, they have that blocky like... Pop figure feel.