If you want a dead Monolith then get Broadsides or Hammerheads (RailGun Variant) S10 AP1.
They are useful against the Nightbringer too but if they're out then XV8's with high strength weapons like Fusion Blasters.
Strength 8 and above is your best friend here, but as there are only 3 S8 or above Tau weapons, your going to have to rely on a little luck with the dice rolls too.
Railguns are your only choice against the Monolith
MissilePods/SeekerMissiles/FusionBlasters against the NightBringer
Good Luck
SGMAlice
They are useful against the Nightbringer too but if they're out then XV8's with high strength weapons like Fusion Blasters.
Strength 8 and above is your best friend here, but as there are only 3 S8 or above Tau weapons, your going to have to rely on a little luck with the dice rolls too.
Railguns are your only choice against the Monolith
MissilePods/SeekerMissiles/FusionBlasters against the NightBringer
Good Luck
SGMAlice
