Drasius wrote:
Making the Alpha your warlord (since he's a character) and rolling on strategic to get "the warlord and 3 non-vehicle units have infiltrate" is pretty lulzy since infiltrate confers to the unit if even 1 member has it.

Any of the psycher buff that can be cast on another unit do well - Invis, Shrouded (technically cast on the psycher but generates a bubble), telekine dome (a bubble the same as shrouded and almost impossible to get for chaos but it can happen), the heretek blessings, IIRC fire shield of pyro gives a unit a 4+ cover save, forwarning gives a unit a 4++, prescience give twin linked. Maledictions also help greatly like enfeeble lets them ID T6 and causes -1 str to their opponent which can be handy to save them against dedicated melee squads, death hex can let them punch the crap out of units that rely on their invulnerable save like hammernators, screamerstar or azrael's conscript blob, misfortune makes you rending against a target, so autocannons, bolters and flamers become far more deadly.

Renegade Knights should let you run an excess of armour that will cause issues with target priority.

 CrownAxe wrote:
You can't join ICs to vehicles, period.

I would suggest looking at Legacies of Ruin from IA13. There is one in there called Maelstrom Raider that gives the vehicle Outflank and Fear. Outflank would confer to the whole squadron allowing them to come in from the side of the table in your opponent's back lines

Also the Night Lords warlord traits are good for a Hellbrute as all of them are actually usable and pretty solid. The best one being the unit has Hit&Run