Dandy (UK) (1987) - Amstrad CPC - Action, Dungeon Crawler

You play either Sheba or Thor (both are active in a simultaneous 2-player game) as you move through 15 dungeons, with the aim of collecting all the available treasure. If this is done successfully, a code will be granted - put them all together at the end of the game. Foes are released in swarms through a control box. Once all these are dead you must destroy the box, to prevent respawning.