The following updates have been implemented:
Changed: Counter of remaining chests.
Now you can see "LIVE" how many chests remains to unlock next weapon.
(in Pause mode)
Fixed: "Voodoo Doll" weapon bug.
(was impossible unlock this weapon... without cheats)
Fixed: "Shaman Achievement"
(was impossible unlock this achievement without Voodoo Doll)
Fixed: "Enginer Achievement"
Fixed: "Master Dummy Achievement"
With the next update in December, I will add a nice ability to revive your fallen friend in 2P Survival mode. Stay tuned!
Enjoy the game! :)