You should use Heavy Thrust first, that's one of two Primo abilities (other being Disembowel) that significantly increase our damage output.

Other than that, DRG doesn't have a lot of group utility, so the main focus is simply maximizing damage. Remembering not to screw up stun resistances or take excessive damage from mistimed jumps or B4B, that's about the extent of DRG group utility lol.