Got the same Problem. It works fine for quite a while (Start---Farm 3 Boxes----Die----Start again---). But after several turns, when i check back the model somehow stucks in the wall, still killing but not farming. For me its impossible to run Hack in Survivalmode over night because i have to help him from time to time to get "out of the wall".
On BG-Extreme everything is fine, farms Exp as hell.
Same there... clock shows 456mins without boxes q.q damm
I have a question what should i leave the game running on the night bg extreme or lockdown normal?
both i get 999 exp beside boosts and benefits but lockdown normal is shorter and i also get boxes?
thanks for helpers