@RatcherTheBot
I use a combination of normalmaps, normal light2Ds, sprites with add+unlit canvas shader and it's very important to add a canvas modulate to your scene to get basic darkness. And I also did not use the glow of the worldenvironment as I just don't like it.
@monstersmustdie
Hey, it's my game bottomless, you can find the jam version on my itch page:
But I am working on making it a full game, the version on itch is very old and doesn't show what I am working on :)