A character may add new classes as they progress in levels.  Multiclassing improves a character’s versatility at the expense of focus.

 

Class and Level Features

As a general rule, the abilities of a multiclass character are the sum of the abilities of each of the character’s classes.

 

Level

“Character level” is a character’s total number of levels.  It dervies from overall XP earned and is used to determine when feats and ability score boosts are gained.

“Heroic level” is a character’s total number of heroic (base class and prestige class) levels.

“Class level” is the character’s level in a particular class, as per the individual class tables.  For the single-class hero, heroic level and class level are the same.

 

Hit Points

Each time you gain a new level, roll a hit point die (the size of the die depends on the class in which the level is gained) and add the result to your character’s hit point total.  Your character’s Constitution modifier applies to each hit point die roll.

 

Base Attack Bonus

Add the base attack bonus of each class to get to the character’s base attack bonus.

 

Defenses

Each time a character gains a new level, his Reflex, Fortitude, and Will Defenses need to be adjusted to account for the increase in character level.

A character who takes their first level of a new class also gains a class bonus to one or more of their defenses; however, this class bonus does not stack with other class bonuses – only the highest bonus to a given defense applies.

 

Skills

When you select a new class, you do not gain any new trained skills.  However, your list of class skills expands to include those of the new class.  If you take the Skill Training feat or if your Intelligence modifier increases, you may choose your new trained skill from the class list of any class in which you have levels.

 

Starting Feats

When you select a new class, you do not gain all of its starting feats.  Select one feat from the list of starting feats.

 

Talents

If a character gains a talent as a consequence of gaining a level, they must select a talent associated with the class in which they gained the level, or from any talent trees relating to Nanite Control/Nanotech, Magic, or Psionics that they have access to.