Acrobatic skill class. Warrior Thief variation.
Innate Abilities: Crawling/jumping exits do not require the player to crawl or jump. 1 person room and limited exits are not influenced by and don't affect the acrobat.
No spells, but here are the skills:
Sneak & Steal, Backstab 1-4, Circle backstab,
Other skills:
Distract- Causes a Lag/Delay - The Acrobat draws the targets attention, distracting them from casting spells/using skills for a few seconds.
Hesitate- Causes a loss of an attack or round of attacks to the afflicted. Perhaps a lost attack over a series of rounds.
Dazzle- The Acrobat is a charismatic person, a liar and an actor. This would seduce 1 an npc to follow them.
Trip- Requires two people. Like circle backstab this can't be done alone, the npc needs a little distraction. Acts like a bash
Kick- A kick to the groin or face

Calm- Calm an aggressive npc with an acrobats awesomeness
Mock- Really **** off an npc and inspire them to fight at a loss due to dumb aggression.
Retaliate- The Acrobat learns to time his attacks and strike before an npc, causing a lost attack for the npc and a gained attack by the acrobat.
I'd like to see this class not dual wield, although I suppose it's possible. The solution for me would be to give them no heavy weaponry, limit them to knives with a max weapon size of a shortsword or club and no two handed weapons. Then Dual-wield is alright by me.
My Idea with Retaliate, is that as an npc strikes, the acrobat strikes instead. attack for attack. Npc loses 1, acrobat gains 1 and only if the acrobat is tanking.
I also like the idea of group skills and since they're a performer perhaps they could produce "acts" or plays that would cause things like regen times of the group to increase.
Low hps, high moves. Is there such a thing as heavy armor restrictions? Example: spell or skill failures due to wearing iron? They'd have that.