^How is burst 2xp? Every cast has its own set experience.
To earn experience in hitpoints, a player has to fight or do a quest that rewards hitpoints experience. Alternatively, one could use an item that gives a specific amount of experience. (ex: genie lamp)
When fighting, whether it be by melee, ranging, or magic, as long as they deal damage, a player will always earn hitpoints experience. There is a formula which is used to determine how much hitpoints xp a player will receive. The sole exception is by using a Dwarf Multicannon, which gives half the range experience and no hitpoints experience.
When a player deals damage to an opponent, they receive some hitpoints experience. If a player hits the opponent, whatever damage they deal is multiplied by 1.33 and given to the player's hitpoints. This is one of the slowest skills to gain levels on.