As you play through Dark Side your character will advance in level becoming stronger from their experiences. Your gamemaster will determine when the party or individuals gain class levels. If you are running a premade adventure there may be preset level up points within the adventure. Character levels max at level ten.
Health Increase: Your character will gain increased health at levels 2, 4, 6, 8, and 10; applied after any attribute increases. These are determined by your character class.
Skill Increase: Your character gains 1 skill every level.
Attribute Increase: You receive an attribute point at levels 3, 5, 7, and 9. Your base attribute max is +5.
Character Proficiency Bonus: Your character proficiency bonus or CPB affects most skills and abilities. All characters start with +1 and that bonus increases by 1 at levels 3, 5, 7, and 9.
Class Ability Points: Your character gains 2 new class abilities at levels 2, 3, 4, 5, 6, 7, and 8.
Mastery: Characters gain their mastery at level 9. Masteries work differently and contain their own bonuses for each class. These can be found in the individual class sections.