Revlid:
Hashut’s Doom Launcher
An amusing concept. The character’s name isn’t very Dwarfen or Chaos Dwarfen, though, and the rules for Sneaky Gits are a bit odd (surely it would be better to have a set amount defending the warmachine, and an effectively infinite number for firing). Also, the firing rules appear to have been cribbed entirely from the Goblin-Hewer, but with the hits doubled for some reason. Mind you, the point cost seems fine.
* By “two-handed weapon” for Spanners, do you mean “Great weapon”?
* Being Immune to Psychology does not affect Stubborn - there is no need to specify otherwise.
Brass Claws of Hashut
I like this concept a lot. Semi-mechanical warshells alternately stumblings, clanking and pouncing their way across the battlefield, accompanied by a daemonsmith “handler” - really cool stuff. The execution, however, could use some work. After several read-throughs, this is my interepretation:
1. There is one Engineer. He is bought alongside up to 5 drones, but these drones are not “active” when the battle begins.
2. Instead, any number of drones may be “activated” at the start of each turn with a successful leadership test, after which they just wander around like weaker, slower chaos spawn.
Am I right? If so, this seems a bit overcomplicated, and a huge hassle for getting up to 5 rather weak models onto the battlefield for 20pts each - especially given that the Engineer has one wound and no defense against shooting.
* How are the bindings of the drones dispelled?
* The drones are 20pts, but how much does the Engineer cost?
* What leadership value do drones use?
Chaos Dwarf Juggernaut
I’m sorry, but I would never use this, just because I hate Boar Centaurs, Dwarfs of Chaos being lumped in with Chaos Dwarfs, and to avoid having to deal with the crew - it should just be a super-chariot, with a combined profile, surely? This… this seems monstrously complicated, so I’m just going to step away.
The Molten Piston
Perfect, of course. :hat off Although perhaps undercosted.
Flame Cart
A flame-belching chariot, pulled by golems who are also on fire? Sign me up! I don’t really like the name, but the rules seem quite clear and simple, although I’m not sure what the Slave Masters rule is - was it dropped? The Flame Belchers could be simplified to a Breath weapon, but the Blunderbuss rules work fine too.
My only real gripe is that, for a 5 wound fear causing chariot with a 3+ Save, a powerful ranged attack and big hitting power even after the charge, the Flame Cart seems very undercosted. Even considering the relatively low movement for a chariot, and the stupidity (on Ld9, mind) - this thing’s a tank!
Oh, and surely the Golems should be immune to flaming attacks, too?
Chaos Dwarf Hellgate
Interesting. Quite Dark Eldar, and (I think?) Grimstonefire inspired. I essentially imagine a more steampunky/babylonian version of this.
* The daemonsmith’s stats seem rather odd. WS5, 2A, combat equipment, but only S3?
* Option 3, while cool, doesn’t work - the Magic Phase comes before the Shooting Phase, not after. Also, a mechanic more along the lines of forcing friendly casters to use an additional “free” Power Dice, like a Dragon Mage, would work better for the effect you’re going for, rather than just handing them an extra dice.
* Option 2, I assume, doesn’t affect the Hellgate itself?
* Option 1 is cool.
For 1, what if that unit has already taken a Terror test this game? What if this result has been rolled before? Surely it’ll have no effect? Perhaps a Panic Test would be better.
For 2-5, a Panic test would also be better than Terror. Otherwise fine.
* While I like the idea of rampant daemons running amok, I think you would have been better using “generic daemon” stats, as opposed to positing the existence of mechanical daemons and greater daemons of Hashut.
* The bodyguard rule is overcomplicated, and implies that the Hellgate can be fired in Close Combat, too. Why not just say that, when in combat, the Daemonsmith is always placed in the second rank if possible?
I’m aware that I’ve put down the most issues for this one, but this is actually my favourite entry.
Daemonhammer Cannon
A case of parallel evolution with Ereshkigal-Namtar, methinks. 
In any case, I like the Daemonhammer Cannon, even if it does contribute to the absurdly high number of “multiple modes of fire” entries. My issues are several.
* It seems a little undercosted for what it can do.
* The Daemonic Blast mode of fire is horribly underpowered except maybe against Siege Towers, which aren’t exactly common.
* The Daemonsmith’s ability to re-roll up to three Misfires in one turn is, frankly, without equal in the current game and therefore pretty overpowered for someone who isn’t a special character.
Triple-barreled is cool, and Daemonic Barrage is a nice switch-up, and the rest is all Hellcannon, so it’s gravy.