Glass cannon rifle warrior.
I tried this in red v blue for a match before work. My team was a bunch of total pussies that refused to fight anything so we lost super hard and I just got stomped a bunch of times, but when I found chances to fight 1v1 and 1v2 I was fucking people up. The warrior is surprisingly tough even when built glass cannon. As an experiment I fought an ele who seemed to have a hard on for me 1v1 and did not use any skills to beat her. I just applied my vulnerable at the start and let my basic #1 slot attack chew her up. Stood in her fire storm and lava font and everything, still killed her first.