Try playing the game where there all the monsters have no special abilities. They're just levels 1 - 4. You start at the stairs and can walk to any spot that's not blocked by a wall or a monster. You encounter (fight) a monster if you enter its square. Compare your level to the monster's level. You take damage equal to the difference between levels, which means if you're the same level you take no damage.
You keep doing this until you are satisfied with the number of VPs you have or you have lost all your health.
If you defeat a monster the same level as you you gain 1 VP. If you defeat a monster a higher level than you, you gain 2 VPs and 1 Level.
Let me know what part doesn't make sense.

thanks for the reply