Release notes 0.6.14:
-Combine the second and third areas on the Airport map
-Damage the player, if they are fixing a barrier and a zombie, is attacking it
-Fixed player being able to get out of the map on the Airport Map(hopefully)
-Fixed player's weapons doing damage to the spiked fence
-Fixed zombies running through defences
-Increase hip fire accuracy by 100%
-Increase the wave everyone is running to wave 20
-Limit the amount of freezing sound effects played when freezing multiple zombies
-Make the first tier 1 weapon upgrade for free in hell after defeating the boss
Update 0.6.14
Source: Steam Community (opens in a new tab)