It's indeed a huge improvement aztek, congratz
But there are still some elements that need some work, here are my C&C but first I wanna thank you for putting my name in the credits
Positive:

• nice reloading, the guns you use are nicely modeled
  
• the sinking mud is a special feature
  
• the guns are +- accurate which can be a pain is the as* to get that right
  

Negative:

• The bullet holes sprites can be better or try to let the texture blend into the wall texture
  
• the level design is better but need some extra, maybe try to model your level which brings nice looks rather better then geometry blocks
  
• The lightning, which I guessed you used dynamic lighting should be replaced by fake physic lights which can be shot and they will move on a "physic scale" to create a realistic view, you will find this code in aum... ^^
  
• Next time, I wanna see your modeling skills
  

But I was surprised to see this update, it's great to see you constantly keep on updating and improving your project, your defenitly on the right track aztek

Cheers

Frazzle