These features are available to any Class. However, some may have attributes requirements, and many require that you have other features before selecting them.

Alchemist
Defensive Training
Enhanced Unarmed Damage
Fast Recovery
Fleet
Flurry of Blows
Focused Training
Forceful Reposition
Hard To Kill
Hybrid Training
Kip Up
Loadbearer
Martial Arts Mastery
Patron
Precision Strikes
Pummel
Replenish Ammunition
Shield Training
Skill Focus
Skill Training
Toughness
Unarmed Disarm
Unarmed Training
Wait For It