Alright, let me just run my Avatar idea through here before I get started with tapping away.

[hider=Midnight Soloist]
[img]http://i.imgur.com/AMBGTMk.jpg[/img]
[/hider]
First ability grants an extra mechanical arm thing per level. At level 2 (her starting level), she'd have two of these arms. Due to this ability, she can not equip any sort of weapon or shield.

Second ability is for any of those arms (or all of those arms) to turn into piledrivers, capable of doing either true damage, knockback, or armor-breaking. Still deciding on which one. Each singular attack is fast and powerful, but has a long cooldown time.

The underlying idea is that each new ability will grant the arms another method of attack (such as cannons to rocket punches to swords to whatever), though every attack is going to have a long cooldown. As she gets more and more arms, that cooldown is effectively lowered, as she has more arms to attack with, and thus, can alternate between them at shorter intervals.

I want to say that she'd be classified as a Rogue, due to eventually having both melee and ranged attacks, in the form of different arm-modes, but Rogue classes doesn't have a 'mixed' archetype...