This was a strategy game I played as a kid and has never really been able to find anywhere. I basically remember the whole game other than the name.
So, in the game you have to defend your dungeon against an invading enemy hero who wants to loot it. You face only one hero at a time but they are very powerful. The firsts level put you against a knight, the second against a wizard. I think I played a demo version, or the game was short, because no more stages existed after defeating the wizard.
The hero enters the dungeon and you start with some "evil" points, or I think they were called "anger" or something similar. The evil points increase over time. Throughout the dungeon you have treasure and gold, and the hero walks around and tries to pick up all the loot. You get more anger whenever he picks up gold and lose when all is taken.
To defend your treasure, you could spawn 4 different minions:
The cheapest was a group of 5 zombies that did a little damage and occupied the hero for some time. This one could really be spammed.
Then you could spawn, I think, a ghost that slowed the hero down.
Then you had a pink kind of ooze that was the most expensive minion and attacked the hero from a distance.
Then you could also spawn a fake treasure chest that lured the hero to it.
The goal was to correctly spawn minions to damage the hero, eventually killing him and beating the stage. You then moved on to the next stage.
The dungeon was coloured red and dark/brown mostly. The game had a top-down view.