I have just started Insane on co-op with a mate and I find it alot easier than on singleplayer on your own.
With that extra person who knows what they are doing, it makes all the difference.
I am on Act 3 now, where you ride the carts out of the control room, *so far* it hasn't been that hard, although I am expecting it to get a lot tougher once we "ride the train"
Good luck though mate, with a decent mate you should be able to do it in a couple of days...

__________________
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Made by Rally_Racer
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Games I want: Call Of Duty: World at War, Gears of War 2, FIFA 09 & Mercenaries 2