Prestige Classes:
Arcane Trickster
New Class Skills
The arcane trickster's new class skills (and the key ability for each skill) are Cryptography (Int), Demolitions (Int), Freefall (Dex), Navigate (Int), Pilot (Dex), Urban Lore (Wis), and Use Device (Int).
Class Features
Weapon and Armor Proficiency: When an arcane trickster takes the Technical Proficiency feat, she automatically becomes proficient with the holdout pistol, holdout laser, light autopistol, heavy autopistol, laser pistol, and blaster pistol. Arcane tricksters are also proficient with all simple firearms and with all high-tech light armor.
Impromptu Sneak Attack: This ability does work on soulmechs, as long as the arcane trickster has the Technical Proficiency feat. Soulmechs are subject to critical hits, so they are not immune to an arcane trickster's bonus damage for sneak attack.