Quote Originally Posted by Velaryon View Post
Most likely it was several characters just firing into the wall constantly. The only ones I can think of that might be able to do it by themselves are Reinhardt hammering away and hitting multiple segments, Bastion in sentry mode, or maybe D.Va if she's point blank and just keeps firing, and even then I'm not sure if she could do it.
Reaper, Roadhog, Reinhardt, Soldier, D.va. Lots of heroes can spam out immense damage at close range.