Endless infection after completing the mission in coop (Dying Light)

Hello friends! Faced with this problem, I see her for the first time.
Played over 200 hours and recently decided to re-take with a friend, joined him on a mission Museum, which is an infection. It began and ended. I thought well at the end of the mission will take place, but no. Eternal lack of stamina and a blurry screen, shooting can not be run and so on.
I tried to do: restart, exit to solo the game (so still), it's a shame, was dying, tried to drink different amplifiers have moved on the way passed the mission with this infection, I thought that it will start again and will pass - no, it started and just left.
Attach a screenshot so you know what I mean.
New save really do not want to do is save in my 2015, I always played all 200+ hours. Maybe you can somehow tradecity save, or what to do to recover from infection.

Screen