Pretty simple and fairly consistent strat. Doesn't take unreasonably long either. You only need two HAV's to kill the boss if you don't waste that much turret ammo on trash.
A thunderer barrage is really nice at the start for a solid damage boost. You can bring 2 TB and 2 HAV and throw both TBs down at the start for even more damage. And you can just abort mission if your TBs miss or something without losing too much time.
Loadout
Thunderer Barrage
3 x M5-32 HAV
