-new gameover screen with a restart button

-Fixed some doors

-Fixed bug from where zombies didn't give points on some specific kills
-added a sound cue for when the player completes an operator challenge

-Added a basic challenge to unlock each operator
-Added a new blood splatter fx
-Fixed Dragon Eggs missing texture

-Added player melee gunt sounds
-Operators voice overs now change upon changing op's
-Fixed Map Loading screen not haivng sound
-Fixed issue with shadowman skip function

-fixed death perception from not working