I was doing a Tier 1 run in the new Royal Jelly gate and after finishing one of the Danger rooms, I went across this path and got stuck in-between two blocks and unable to do anything.
http://steamcommunity.com/id/zpte/screenshot/558664840075207338
The enemies kept hitting me and I raked in over 60 seconds of poison and died over and over again. I gave up after hitting my third death. I was unable to move and just kept running on the spot without any way to dodge. Very frustrating as I wanted to get this gate cleared for some RJ runs. :(
lol love your TF2 pic. I know off topic but thought that was cool.