So basically what happened:
I enter the first capture point on dustbowl 1 from the left. A pyro and heavy are there. I charge into the pyro, killing him. The heavy is at low health from demospam, so I one hit him. A equalizer soldier comes and I kill him in two hits. Afterwards, a battlemedic and a sniper, both using melee, run onto the point. I get a crit on the battlemedic but the sniper manages to get some hits in before I kill him as well. I end up capping the point with 1 health remaining.
