I've played Damned. It's a fun idea, but it's horribly skewed towards the player playing the monster because they only need to hit you once for you to be out of the game... but a successful survivor game is going to be AT LEAST 10-15 minutes if they don't spread out and rush. The idea is that the monsters aren't supposed to know where you are while they are lurking and that you are supposed to be able to evade or escape them if they show up, but this doesn't work in practice.
- The Lurker is the most disadvantaged monster, but his ability to set traps means that he essentially always has an idea of where you are if played competently at all. Survivors can hold you off with a door, but if they don't have total line of sight in the room they are in, they have a good chance of getting attacked from behind and being completely fucked.
- Bloody Mary is the slowest and can only attack you once her meter charges, but simply being near her at all charges the meter and if she's berserk, you HAVE to hide somewhere she can't get to, like in a closet, because she is much faster than you. This can lead to unwinnable situations where you are essentially trying to escape her, but charging her at the same time.
- The Phantom can't see you if you aren't moving, but he's always active, reasonably fast, and doors can't stop him. If you wait at a chokepoint, you will win every time.
To put it simply, Damned sucks because it's not balanced. If you want a co-op experience like this, wait and see if
Last Year can beat it's legal issues.
As for Contagion... it's kind of like a slower paced Left 4 Dead where things like ammo actually matter?