Join this cabale, brothers and sisters. Let us pool our knowledge as to better smite our enemies!
Looking at our arsenal of weapons it becomes quite obvious that we are very capable at demolishing MEQs with Inferno Bolters, Tzaangor Blades and a myriad of other ways. But tanks, vehicles and MCs are a different story.
Neither our Troops nor our Terminators are really effective against those. Glimpsing over to the Death Guard or vanilla CSM we can see that they can take (Combi-)Plasmaguns, Melters, Blightlaunchers etc. in their troop and Terminator units, making them way more flexible.
So we have to look for other ways to dispatch of those pesky Leman Russes, Imperial Knights, rigid Ork constructs and Space Marine vehicles.
I want to compile our knowledge and experiences with our different anti-tank weapons/units in this thread to get a better understanding of those.
I'll start with my humble contribution:
I don't own a normal Predator but instead play a Hellforged variant with a Plasma Destroyer (2D3 S7 AP-3 D2 shots without "Get's Hot") and Lascannon sponsons. Performes well as a tank hunter but is often the first thing to get blown to bits on my opponent's turn. The degrading profile also stings. Which takes me to my favourite AA unit.
Now that our Exalted Sorcerers provide a re-roll of 1s to-hit a rifleman dread with a Missile Launcher and Lascannon combo is very attractive. It is also almost 50 points cheaper than the Predator and never degrades. WIth the Fire Frenzy stratagem, it can also throw out 4 Lascannon and 2 Missile Launcher shots which is more than a Land Raider can shoot. I also like to change out the Lascannon for the Plasmacannon. Most vehicles are T7 so it still wounds on a 3+ and the damage isn't as swingy as on the Lascannon. The nearby Exalted will keep the Helbrute from overheating and even if he does this might trigger his Crazed rule to let him shoot again.
It is paramount however, that you take at least two Helbrutes since they aren't that tanky.
Love the model. As with anything that needs to cross the field to get into CC you need to run this beast either in pairs or with other CC distractions (like the Mutalith, a CC Helbrute etc.) so that at least one or two of those units make it into close combat. Once there pop the Daemonforge stratagem and enjoy the show as the Maulerfiend rips apart whatever you send it against. I also strongly urge you to take the Lasher Tendrils and NEVER the Magma Cutters. The former not only look more badass they also help the fiend to dispatch infantry while the later is very unreliable with only two shots.
In almost any other Legion this might be meh at best. But with our ability to buff it up with Flickering Fire, Prescience and Daemonforge it can put in some serious work! The volume of fire is good enough to deal with MEQs and it can shred tanks!
So far these are the units I have tried. Feel free to add your experiences. Maybe some of you can enlighten us on our Forgeworld options?