Well, just finished the demo last night and have let my thoughts sprout. My only problem is the control scheme. Pressing X (I'm on PS3) to sprint is really dumb. (Also, when sprinting, why do I not auto vault over obstacles? I have to stop, then press X to vault over something, pretty flow breaking.) X should have been used to jump, that is all The crouch button should have been used for sliding while running. The main problem with pressing X to sprint is that you normally use the right stick to move the camera, when using X to sprint, you are forced to use the left stick to look around. Which is horribly confusing for the player.
Here's how the layout is, L2 to leash, R2 for special weapon attack, L1 ADS, R1 fire, Triangle to Cycle weapons, Square to reload, d-pad to select weapons as well, circle or right stick down to crouch or melee, based on personal preference. That's all well and good. Here's the bad choices: X to sprint, double tap X while running to slide. These one's should have been: left stick to sprint, X to jump while walking, Right stick/Circle to slide while running. See good controller layout design? Not that hard. Yes, this kind of layout I've mentioned is used in every other FPS, but it is used in every other FPS for a reason. It works well. Simply put, don't try to fix what isn't broken.
I'm sure that I'll get accustomed to the layout, but It is really stupid.
Anyway, in-game action. I was having sooooooo much damn fun. Just leashing an enemy towards me, kicking him away, leashing him back to me, Etc, etc, was unbelievably awesome. Plus, (And mega yay for this) your character has stupid amounts of health and can deal out so much pain that cover is completely pointless. I'm really looking forward to playing the full game.