I would be curious about your favorite coop games. I often find them a big lacking, often being a bit unbalanced. An example is Battle for Hogwarts, where one game can be a walk in the park and another absolutely impossible and rarely is there a balanced match.
Another vote for Pandemic. My wife and I played a TON of the original years before the actual pandemic. Started Pandemic Legacy Season 1 with some friends and it’s an absolute blast too (literally… at some point you have to permanently remove / destroy game pieces and we strapped them to a bottle rocket and shot them into the night sky).
It’s definitely a game where there are basically a lot of ways that you can lose and only one way to win. It often feels like the loss conditions are closing in from all sides. More often than not it also feels like the line between winning and losing is razor thin and you feel like you are “grabbing victory from the jaws of defeat”. This can be a little stressful at times but I find it enjoyable. It has a built in mechanism to alter the difficulty too, so you can get as close to the jaws of defeat as you like.
Very much recommend the base version.
Also recommend the Legacy version, but it’s a bit of a commitment and can only be played through once (but that playthrough is spread across something like a dozen play sessions)