Hi! It's been a while since I have finished a pico-8 game to be able to share it here, but this is one!
The controls are Z/C to Jump, and X/V = Shoot (or respawn if you become a slimepire)
~ Story: ~
Years after the horde have claimed Earth's surface, they find their way into Bunker 4103 - the last bastion of humanity. You awake in a remote part of the underground shelter, and if you want to remain human you must reach the bunker's deepest point: the safe room.
~ Extras ~
You can tip $3 or more on itch.io for access to extra goodies: illustrated & pixel maps, a comprehensive manual, and also a 2 hour video of me talking through the game project and its code.