-> Added a heat transfer math problem
-> Added Lambdazon the supply delivery service for Red Phial Zombies
-> Added the option to change your player model like in sandbox
-> Your score is now based on how much lambda you earned/spend

Note: Lambdazon is activated/deactivated by pressing the key bound to +menu.
Items are selected by pressing keys bound to slot1 and slot2.
Items are purchased by pressing the key bound to +use.

-> better optimized game mode for use on dedicated servers.
-> Elvira now has pose parameters so her run animation is actually correct.
-> Now the game starts with 200 lambda instead of only 100.
-> Initial zombie speed is reduced
-> Fixed a problem where zombies were dealing more damage than expected.

-> rpz_jerinktopian_stardestroyer changes
--compiled for hdr
--fixed a vent that was not completely against the wall
-> game mode (lua) changes
--added a crosshair to make aiming possible!
--another math problem has been added
--added unit specifications to existing problems