Here's a basic build:
Human - Shadowblade Preset
-Wits (You get initiative racial which is why)
+Finesse
1 Thievery
2 Scoundrel
Skills: Backlash, Throwing Knife, Adrenaline
Talents:
Parry Master(1), Torturer(3), Mnemonic(8), Walk It Off (13), personal choices afterwards.
Abilities level ups:
Poly 2 by level 7 at the latest to start using "spread your wings". You really want it earlier, probably around level 5-6 since it makes fights in the catacombs much easier. This is where that extra memory comes into play at level 8. Only really need Poly 3 for skin graft and vitality global skills by late game, otherwise just pump Scoundrel to max.
The reason why Torturer and Walk It Off are in here is because your whole kit is about statuses, and you will want to avoid being stun-locked in shocking blood pools as often as possible. If you're not in sneak, your dodge % is what saves your bacon. With the right gear and talents, getting 30%+ in the early game is not impossible and really turns fights around when it seems hopeless.
You will buy your core kit, chicken claw/wings/chameleon and later get skin graft and other status fists.