Do you remember The Chaos Engine by the Bitmap Brothers?
That was/is one of my favourite games from my Amiga owning years and I’ve got a sudden desire to play it and games like it at the moment. So if you happen to know of any good recent games that evoke the Chaos Engine vibe then suggest away!
Note: Co-Op isn’t a big deal but having the second AI character is. Also if it’s a bit Steampunky then that’s a bonus.
I thought of Alien Swarm but Chaos Engine had alot of puzzles going on and the level layouts would change around you it was definitely more than a straight shoot-em-up after the first couple of levels.