This has got to be the worst mission in DW8 so far.
So insanely buggy in terms of event triggers and so much backtracking.
The gate you see flashing on the left didn't open until I went and crossed an invisible tripwire in the environment. I assumed I could pre-emeptively wait at the game because at that point I figured out that I needed to be ready to destroy any enemy ballistae that was in the way of our ram.