I think On Overwatch should be removed to get On Target (2) Achivement.My opinion is it should’t be that hard to get a cosmetic, because its almost impossible to do On Overwatch because if you even stay behind the team the game just spawns enemy behind you.
Is that the one where you can’t take any melee damage?
It’s tough, but I believe its doable. ‘No damage’ runs were a thing in V2.
tbh i believe that challenges should be hard and are fine like this, if some people have done it everyone can.