They didn't even make the first checkpoint. They seem to've thought: if they link shields together, they can make a shield tunnel and be invulnerable.
That is 120% not how Winston's shields work. And when it didn't work, they couldn't figure out what else to try. I was eliminating a Winston - as Tracer - every 12 seconds.
It was a grindhouse. An hilarious, hilarious grindhouse.