This is a classic Adventure Game with multiple levels, various monsters, and different objects to collect.

Your character can be moved using the arrow keys and can swing their sword by using the spacebar. Each of the monsters will cause damage if you run into them - they can be destroyed with the sword or the sling - they may need to be hit more than one time.

Press the 1 key to scroll between no weapon, the sword, the sling and stone, and both at the same time.

You move to the next level by collecting all of the keys. Some of the keys are 'hidden' and you can only get to following a single path.

The final challenge is to get to the Treasure Chest after collecting each of the keys on the third level.

Good luck!