-Lock down navigation fix
-Fixed issue with zombies walking through doors
-Added munition maximizer to Lock down
-Changed how you enter the main building on lock down
-Fixed zombie eyes staying visible if Ultra-kill was active
-Reduced amount of particles for zombie spawn portal to increase performance
-Increased zombie health
- other various minor changes to increase performance
Hot Fix V0.80.9
Source: Steam Community (opens in a new tab)