While it includes a mention of 3rd party, the issue in and of itself is not 3rd party since I'm looking for a 1st party archetype that would stack on top(I have looked threw all the 3rd party ones already :( )
Underground Chemist goes very well with the variant multiclass option for Alchemist, if you want Bombs. Though, a lot of people flinch away from the loss of feats.
Ya I guess there wont be a 3rd archetype thrown in there then. Losing evasion for a ki pool just doesn't seem worth it when I can grab it with a rogue talent. And with out sneak attack the bombs from underground chemist aren't worth it.
Also vmc alchemist is a no go im going vmc barbarian.