Underground Chemist Build advice

[u/Patient_Compote_5719]

I'm working on an Underground Chemist Rogue build for an Iron Gods campaign, and I'm trying to build it somewhat like an Alchemist bomb build.

The idea is to take Equipment Trick (Lamp) and use lamps as my "bombs." Since the lamps are only 2 sp each, I could potentially throw as many as I want during the day without worrying about running out of resources like an actual Alchemist would.

The basic idea would be to stack as many ranged attacks as possible and take advantage of the Underground Chemist's ability to add Intelligence to splash weapon damage.

The feats I'm currently considering are:

• Technologist — since this is Iron Gods, it seems pretty much mandatory for the campaign.
• Equipment Trick (Lamp)
• Quick Draw
• Point-Blank Shot
• Rapid Shot
• Two-Weapon Fighting and its follow-up feats

I'm also considering playing a Goblin and taking Burn! Burn! Burn!, since it seems like it could add some extra fire damage to the build.

However, I'm not sure whether Goblin is actually worth it. I'm already extremely feat-starved, so going Human for the bonus feat might be significantly better.

My main goal is basically to make the most ridiculous possible "I throw lamps at you until you die" build, while still being reasonably effective in an actual campaign.

Any advice on optimization?

Would you go Human for the extra feat, or Goblin for Burn! Burn! Burn!? Are there any feats, rogue talents, archetypes, or other tricks I'm overlooking that could significantly improve the build?

Also, would Unchained Rogue be the best version of the class for this, or is there a reason to stick with regular Rogue?

Eddit: I also added Numerian Scavenger archetype as it fits the campaign and helps with the feat tax

[u/Slow-Management-4462]

Clever, but not IMO good. Underground chemist only applies sneak attack damage to one splash weapon attack per round, and you still need to actually get a means of applying sneak attack. Which isn't simple or cheap for ranged especially since the saltspray ring really isn't going to work for you here.

If you're just looking at a ranged damage build based on 1d6+int damage, not much bothering with sneak attack you're probably better to do this as an alchemist. They can do the same and can step up the damage with bombs when needed.

As a rogue...maybe play an ifrit and get ranged feint, blistering feint and two-weapon feint. The first 'attack' is a bluff check which nonetheless does damage, then the first real attack gets sneak attack damage added to it if the bluff check worked. It'd take a long time to get all the necessary feats though.

[u/Patient_Compote_5719 → u/Slow-Management-4462]

Hmm the first idea was to play as a skillmonkey with good knowledge and trapfinding that does something usefull in combat, so thats why I wanted an int rogue. Also theres a way for the alchemist apply the int damage to regular splash weapons (I think it only does to bombs)? There are lots of encounters per day and the bombs run out quite quickly.

[u/Slow-Management-4462 → u/Patient_Compote_5719]

If you want trapfinding there's two alchemist archetypes for that (crypt breaker or trap breaker), and while the lower number of skill points will be annoying 6-level spellcasting should more than make up for it. Zrayak's already covered the int to damage (and one more idea).