Lol and I assume you're playing on Normal. Can't wait until you reach The Siren. That's all I'm saying. You think they are bastards now, wait until you play Hard or 1999 mode. On 1999 mode they've killed me in three hits, which is literally a couple of seconds. Not to talk about how damn resilient they are, literally having run out of ammo at some times. Tips? Stay on the move. Although it says 'Aim for the heart', don't do it unless you're safe to do it. Just try and kill him and stay alive, that should be your priority. When he closes in, use the skylines to escape him to another section and then fire at him from there. Or, lead him into enemies so they'll fight each other. If you're cornered without escape, use Shock Jockey traps to stun him and gtfo before he -blam!-s you. They aren't poorly designed/programmed. They do exactly what they have to do, and they do it incredibly lethally. They fit their role perfectly. Great tip is to ride the skylines back and forth in one area near the Handyman so he'll mount it and electrify it. When he does this, get off and aim with the sniper at his heart as he is hanging. You should be able to get two or three shots on his heart which do considerable damage. It's how I got the achievement for only doing heart damage. And with the Fox, use Undertow to push them off the edge, killing them easily. If they are not so close to the edge, use the one that lifts them in the air, and then combine with undertow to send them flying far off the edge.