Warpstone Flux Rating: ⭐️⭐️⭐️⭐️ 4/5 stars. The rules are very good!
Background.
One of the main reasons that I bought the Journal Tactica on release day was to see the full extent of the Veteran Breacher Squads. These are offensive line breakers for Zone Mortalis or otherwise elite reserves for the legion, and rarer than the other veteran squads available.
Strengths.
Space marines with 2 wounds, 2 attacks, and WS=5. They come native with a 3+ armmour save and a 5+ invulnerable save which makes them almost ideal for Zone Mortalis short of a 2+ armour save - but that is what terminators are for and there is some worth in considering the relative points cost against that.
Veteran (3) ensures that they will be on point to swipe at your enemies and get on top of their tactical objectives. The Leadership and Cool of 8 is also reasonable here.
Players will want both the vexilla and the nuncio vox as the basic upgrades.
As with other Veteran squads, the customization for this unit is really where it shines. The humble bolt gun can be swapped out by any member of the squad for a variety of options.
Chainswords and Chainaxes are clearly nice to have here, and the chain axe in particular is very well suited to certain legions (looking at you Space Wolves and World Eaters) but all legions can have them. The Astartes Shotgun is nice for stun, but perhaps little else. It might be worth taking a couple per unit if you are so inclined.
Volkite chargers are fine so long as you take them in number! Always with volkite: go big is the rule of the day.
The melee swaps are good as well: charabal sabres are reasonable, but I'd honestly spend more points and take a power weapon, power fist, or lightning claw here instead. Or maybe a mixture of them all depending on your points value you have to spare.
The one in five swaps are also tempting. The flamer is strong for Zone Mortalis, and perhaps more broadly as the Medusan Immortals show. Graviton is excellent, the las cutter also has its place. The melta gun likely calls for a more specific set up. Speaking of which, the sergeant can also have melta bombs (yes for specific builds), disintegration pistol (reasonable if you don't mind dying too), and a thunder hammer (yes!). The Vexilla and Nuncio Vox are automatic upgrades here as well.
Weaknesses.
The basic 3+ save is a mild concern offset by the invulnerable save.
The points cost can also build up rapidly here and I advise watching how it might compare to a naked set of Tartaros Terminators at least.
Builds.
5 Veterans, Vexilla, Nuncio Vox, 1 shotgun, 1 graviton gun, 2 power weapons, thunder hammer and disintegrator pistol for the sergeant (195 points).
An all purpose squad for throwing out statuses and taking on many comers. It is very expensive though.
5 Veterans, Vexilla, Nuncio Vox, 1 shotgun, 1 flamer, Sergeant with thunder hammer (165 points).
A cut back version of the above with a flamer instead.
10 Veterans, Vexilla, Nuncio Vox, 9 Volkite Chargers, Sergeant with thunder hammer (308 points).
Lots of Volkite.
10 Veterans, Vexilla, Nuncio Vox, 2 Melta Guns, Sergeant with thunder hammer and melta bombs (310 points).
The melta set up. I'd suggest a couple of shotguns here as well just in case. And chain axes too because why not.
10 Veterans, Vexilla, Nuncio Vox, 10 Power Weapons (355 points).
Very expensive compared to raw terminators, but they do have the rule of cool it has to be said.