Every skill goes from level 1 to 99, and XP in a skill is capped at 200,000,000. The XP curve accelerates: each level needs more XP than the last, and level 99 needs about 13 million XP. Hitpoints starts at level 10. In combat you gain 4 XP per point of damage in the combat skill matching your attack style, plus 1.33 XP per damage to Hitpoints. Magic grants each spell's base XP plus 2 XP per point of damage dealt.