Which the majority of dretches are. I have seen people who can quickly and cleanly kill a human, but the majority either head straight on and get gunned down on the way there, or use walls and ceilings and a zig-zaggy path to dodge bullets. Unfortunately, this often makes it hard for them to aim, and I can dodge their lunges and continue shooting. Sometimes, I admit, I'll have to empty one or two full clips, but the majority of the time I win.
I salute those players who actually know how to USE a dretch.