Need help with a Half orc scumbag

[Expostfacto]

So I'm going to be playing in a three man evil party and was looking to make a high damage melee half orc.

I'm thinking either Skulking Slayer Rogue or the Executioner Archetype for the slayer class.

I'm also looking at surprise follow through and it's line.

Should I start out with a level of fighter no matter which way I go?

25 point buy, I have the intelligence so high to pick up dirty trick and other feats as well as roleplaying purposes.

STR 20
DEX 14
CON 12
INT 13
WIS 10
CHA 8

I haven't done anything with pathfinder for awhile so I'd probably go Slayer except for the fact that Unchained rogue is now available. Is rogue worth it now?

[My Self]

Depends. Unchained Rogue is equal or better in every way to regular Rogue. The new features cater more to high DEX builds, though it's still as STR-friendly (or unfriendly) as regular Rogue is.

Slayer will let you do TWF without too high of a DEX.

[Entryhazard]

Also you can use all the rogue archetypes with unchained

[Heretek]

Scout is pretty much a must-use archetype if you're using a rogue and works well with Skulking Slayer. Always nice to see others using STR rogue builds.

That said, there's a valid reason rogues aren't recommended often, thanks to the presence of things like vivisectionists, archaeologists, and slayers. Still though, if you're fine with the restraints of a rogue, I'd still recommend it if only for the Skulking Slayer/Scout combo. Sneak Attack d8s on a charge is just very satisfying.