Hey, I'm happy you like Mondar's Dungeon! As the game doesn't randomize the meaning of the cards (only the "dungeon"), we thought it would be more interesting to have people find out what each card type does by themselves. Basically you can double-click each card, and combine each card with other cards, and those are pretty much the only gameplay. Maybe some other users wrote guides. <_<
What I usually recommend is drawing your own map of the dungeon that gets generated, as there is no in-game map.