In the game, you play as one of the four available heroes. They differ in maximum energy, resistance to injury and walking speed. In addition, each character has a different primary weapon and can cast spells specific to them. After choosing a hero, you move with him to the first room. From here you can move on to subsequent worlds, although not as you wish - you have to visit them in the order imposed by the game's authors.
The gameplay is all about killing everything that moves. From time to time you encounter a bigger monster, then you can finally use the spells you have been saving for this occasion. At the end of each stage you also have to fight a larger monster.
During your journey, you will also encounter various obstacles, traps, elevators, keys to find, etc. You will often have to think a bit to get further.