My entry for Toy Box Jam 3, 2022. Help Sally Neptune escape from the evil Monocronies!

Move: arrow keys
Shoot and strafe: X. This will strafe if you are not targeting something, and will let you circle-strafe a target.
Jump: Z or C
Tips:

You will need keys to open doors.
Look for the giant Neptune coin to escape!
There are gun powerups around that will let your rainbow gun shoot faster. Try to find them all!

I've always wanted to make a game based on the cast.p8 demo, and this is it! I am very happy with how sprite occlusion turned out.
I wrote this game in multiple files, so it may be tough to read in the pico8 editor. When I get a repo up on github, I'll update this in case anyone wants to see how I made this. Enjoy!
--- October 16 2022 ---
I had originally wanted to flesh this game out more with extra levels, but that hasn't panned out. I did majorly optimize the graphics, so it runs faster and looks better. I wanted to share it here since it is much easier on the eyes now.