Fixes, changes and added stuff for 0.52.

Fixes:

• Dropping a weapon on the ground with zero ammo in the mag and then picking it up again would result in a full mag. Fixed

• Fixed the shower not cleaning off the blood everytime.

• Fixed Zeds getting stuck on certain spots in the Planetarium.

• Fixed the Steam achievement Slice'n'Dice. It is now showing the progress correctly.

• Fixed the Steam achievement Balboa_2.0. It is now working as intended.

Changes:

• Prestige-ing a class not only requires you to be LVL 20, it will also cost you +100Z₭ per Prestige LVL. So LVL 1 is 100Z₭, LVL 2 is 200Z₭ etc. With a max-price of 1000Z₭.

• Zed drops (Zed-Cola, Piggybank, Ammo box) now have a 3% drop chance instead of 2%. Final wave/Boss wave increases drop chance to 8%.

• Superb Needle Gun's (Doctor's staring primary weapon) and the Dewolt Syringe pistol are now Hitscan weapons instead of shooting projectiles with bullet drop.

• The Doctor starts with a full pack of Zed-Cola.

• Lowered Max-Ammo for Nuker Primary weapons from 70 to 58, while increasing the ammo price by 8%.

• Changed earned XP for the Class daily challenges from 1000 XP to 4000 XP.

• Lowered the Zeds runspeed in Normal and Hardcore difficulty by 10%, leaving Kamikaze as it is.

• Zed spawn rate is 1.4 seconds per Zed in Solo mode, except for Hardcore or Kamikaze, where it is 1.1 seconds instead.

• The length of the metal bar is shortened.

Added:

• Prestige-ing also gives the selected class +1% for all Level bonus stats and 15% bonus XP per Prestige level.

• Added Sticky Grenades to Doctor's loadout.

• Punch Lennart or The Dude(Escort Objectives) and It'll boost their speed by 100% for 5 seconds. They even have voicelines!

• A little text Showing Difficulty in scoreboard (TAB).

• Difficulty XP multiplier. You now earn more XP per Zed kill in higher difficluties.