So many problems.
My first and biggest complaint is the walk through button. putting the button in the game play area is just like pissing all over your players. this is not first game i have played where the maker had no idea where to put the damn button. If want to make a button available in the freaking pause menu.
on top of that the wall were sticky so it was very hard to navigate away.
And finally the glitiches ended up just killing the game for me.
at one point i was in a room with baddies and when i fired i hit the walkthrought button while i was stuck to a wall being chased by badguys and when i closed the walkthrough window i was out side the wall off screen and i could not get back in.