I have to disagree with a fair bit of that.
Firstly, the character models. Natko wasn't badly designed, he was just ugly. Really ugly.
The aiming speed. I have no problems with it whatsoever, it doesn't take much getting used to.
The cover. I thought it worked really well. Sure, it wasn't realistic, but it was a good way to not die.
The enemy AI often acts unpredictable. They roll on the floor, melee you, insult your mother and the ISA, and generally act INTELLIGENT. You know, Artificial INTELLIGENCE. A lot of games don't seem to realise this, and have bog standard enemies that run around and shoot. The Helghast use cover. They blind fire (which for some reason you can't do
)
My main complaints with the game are to do with the online. The starting rifle is woefully underpowered, it takes a good 10 bullets to kill somebody (for comparison, it takes about that many to kill an enemy in Visari Palace).
There is no party system like R2, where your friends stay in the same game as you.
There is no automatching lobby. Seriously.
There is no co-op 