From indiegames.com description: "Karoshi, a mix between a puzzle and a platformer game, is all about getting yourself killed. Each new level (of which there are 25 in total) presents a new challenge, and often the solutions are different from what you think. There's some humor, some weirdness, and an interesting boss fight at the end.
Most stages are solved quickly once you figure them out, and the game takes about half an hour to finish. You jump with Z and if you've found a gun you can shoot with X.
"Inspiration, amongst other things, has been I Wanna Be The Guy as well as Psychosomnium by cactus", says the creator."