I got this thing here because someone requested it (thank you for that as well!) so here you go!
Changelog: (there may be quite a few unwritten changes here)
Modified Gun Stats:
Jungle (More Trees, More Static Objects, More Enemies and other small changes)
Riverdance (More Trees, Deleted Barriers, Can Swim now, More Enemies, Kleers and other small changes)
M'keke Village (More Enemies, Kleers, SciFi Commanders and other small changes)
Improved weapon rendering: (First Person weapon rendering)
Modified the sounds for:
Enemies (Kleer, Kamikaze)
Weapons (Single Shotgun, Double Shotgun, Cannon, Circular Saw, Clawdovic, Colt, Hand Grenade,
Minigun, Serious Bomb, Uzi)
Modified the Textures for:
Interface (Armour, Hand Grenade, Crosshair)
Weapons (Double Shotgun, Minigun, Uzi, Zap Gun)
Modified the stats for:
Modified the hitbox for: (collisions)
Kung Fu Zombie
Power-up durations in single-player are the same as in multi-player!
Re-balanced difficulties! (Tourist is going to be WIAP while serious is gonna be really serious)
To get an extra-life you need 20000 points now!
No more white flash after you detonate Serious Bomb! (still thinking about it)
Added weather to a couple of levels! (to the ones that the weather fits)
New weapon models! (I don't mean that all weapons have NEW models...)
Improved fire effects in weapons and turrets!
Resized a couple of enemies! (to give you the idea of how serious they are)
Fixed up some ragdolls in enemies!
Improved gibbing and a lot more blood!
Better use of shaders! (Refraction shader for example!)
Several more changes which I forgot to write! (sorry about that :D)