No motivation to keep playing (No 1-50 system, all i see is a certain amount of credits to reach the next rank, which can be achieved by anyone so its not special)
Amour abilities. Sprint is a good addition but its too overpowering, ie. sword sprint, just keep sprinting when they're one shot etc
The feel of the game, like graphics and what not just look kinda blurry, i don't like the addition of motion blur.
When the players crouch their ass sticks out and it looks ridiculous.