Best skill build is probably:
Traps
1 Fire Blast
1 Shock Web
20 Lightning Sentry
19 Charged Bolt Sentry
20 Death Sentry
Shadow
1 Claw Mastery
1 Burst of Speed
1 Fade
1 Cloak of Shadows
1 Psychic Hammer
1 Mind Blast
1 Claw Block
1 Shadow Warrior
1 Shadow Master
20 Venom
Martial Arts
20 Dragon Talon
Idea is to max out Death Sentry and Lightning Sentry ASAP in parallel at the same time as the shadow skills that aren't Venom to support you through the game.
Then start maxing Venom/Dragon Talon (DT first) late NM for an alternate kill method in hell since a lot of stuff will be lightning immune. Alternatively for a safer route and/or if your gear is really bad, you can max Shadow Master instead of Venom/Dragon Talon for safety... but you have to be pretty patient against lightning immune packs/run away from them in that case. If you have the right gear it's sometimes worth it to get a point in blade barrier too in which case lop another few points off charged bolt sentry.
Then max Charged Bolt Sentry later with your really late game points.
For leveling up through normal though I'd suggest maxing Wake of Fire first (at early levels put points into the shadow tree pre-reqs and fire blast), then respeccing into lightning traps later. It's so damn strong in normal.
Plenty of viable builds though.
--
No problem!
This is a cute and pop genocide of love!