So you want to be a Hero?
As per the PHB p.22 modified by the UA p.18, and Ammended as follows:
- May roll d% each level for STR, DEX, and CON as per the Cavalier rules
- If a marital character (fighters and their subclasses, cavs, cav-paladins) chooses to hold a prof slot, they may apply it whenever the choose in between levels, however, they must spend three combats “self training”. i.e.- the first time the use it in combat they receive the full NP penalty, the second time they use it the penalty is halved, the third time they use it they have no penalty to hit. Throughout this process whenever they roll “to hit” any d20 roll of 1-2 is a miss.
- Proficiency slots can be used to increase efficacy with weapons already taken. Added Proficiency in existing weapons for characters above first level decreases the weapon speed by 1 for melee weapons, to a minimum of 1, or increases the short and medium ranges for missile weapons by 10% rounded to the nearest integer.
Weapon specialization may be selected during character generation. If weapon specialization is not selected during character generation, it remains forever unavailable to the character, barring some magical or divine intervention.
If weapon specialization is in play, fighters may take a second proficiency in the same weapon as the first, granting them one extra attack every 2 rounds with the weapon (hence 3/2 attacks
with a melee weapon at 1st level, 2/1 at 7th and 5/2 at 13th), +1 to hit and +2 damage owing to their skill. Specialization costs one proficiency “slot” for melee weapons and crossbows, and two “slots” for missile weapons other than crossbows. Darts are not eligible for Weapon Specialization
Double Specialization: After first level, for melee weapons that are not polearms or two-handed swords, a third weapon proficiency may be used to specialize further; this increases combat Bonuses to +3 to hit and +3 damage with the weapon.
Slayers are a special sub class of fighters, rescrcted to the Dwarven races.