It's almost impossible to get melee kills with the drill. It's not good enough to just land on the enemy, the drill also has to align with the torso properly to kill them or you just get hit markers.

The new utility of the to refuel instantly is a good addition though. You can just negate hit with the correct ability and can't really fly but have to hop around and consider momentum a lot because of how the legs work. Plays very uniquely.