I was playing through an early build of the game recently. Noticed some cool things like a new enemy at the start, more areas and details. And there's a swat walker on the street and it looked like that if you entered it you would have been able to ride it through the street section. Funny that the game seemed better in certain areas before the final version. Here's a playthrough of the first levels with Joseph.

You'll be lucky to survive the first area of level 4, the AI is so overpowered there.

lol I played through that level and man do those grunts chew through your health like no tomorrow. I basically can't allow them to shoot for longer than a second or I'm dead. They should have kept that for Oblivion difficulty, would have been funny.

Awesome thanks for the support, Dinomite!
Definitely gives me great motivation to keep at the coop mod.