Level: This is a measure of how generally buff and studly you are. When the rules or cards refer to your Level, they mean this number.
You gain a level when you kill a monster, or when a card says that you do.
You can also sell Items to buy levels (see Items).
You lose a level when a card says you do.
Your Level can never go below 1. However, your combat strength can be negative, if you get hit by a Curse or suffer some other kind of penalty.