I rember playing rebellions avp a long time ago. It is still one of my best horror games experiences ever. That is when u played as a marine alone in the cmaping. Man that was scary like shit. So even though I am normally all for co op I am not sure if this is the right game to put it in.
The reason why is that imho you don't get this scary crawling tension when you run around with a bunch of buddies like if you run around on your own.
Maybe the devs can go for different options, so that you can play alone if you want and as in co op if you want. If this is already in I have missed it
And one more thing, please make it really scary and sneaky like the original, not like that incredibly boring Doom 3 game. That is a good example of how not to be scary.