As per title says. I accidentally pushed the big boss through the side wall and off the map. Didn't screen cap it but it just left me with nothing to fight and no finish with only the PC walking around.
I got that mostly from grappling the boss, but there are times where he'll just wander off the map without any provocation.
Here's a video of it happening. https://www.dropbox.com/s/sfj8n608dr4shun/bandicam 2015-07-06 11-35-52-792.avi?dl=0
The boss seems to do this every time for me. I hit him enough and he just walks backwards off the map.
Bah, BOSS walks out the map ? That bigass thing actually knocked me out of the map instead and was left walkking against the wall with his junk out.
Definitely a frustrating occurrence. For me, I just panic-sprinted across the sewer as the boss was coming at me, carefully ran back to the other side and he was gone.