Skulldude

Skulldude is a free PICO-8 game by GuerraGames, released in October 2017 for browsers as well as Windows, macOS, Linux and Raspberry Pi, in which a flaming skull with a hatred of slimes fights through a dungeon of 32 rooms, four boss fights and dense enemy fire. It is played from a top-down view, with a fire button that switches the player into slower auto-fire and a dash that passes straight through enemies and their bullets and is the main tool for surviving boss patterns. Cleared rooms stay cleared even after the player dies, and the developer names the original Legend of Zelda as the main influence, giving it a dungeon-exploration structure with secrets hidden as suspicious pixels on the map.