I played SH4 a bunch of years ago, recently re-installed it and now in the process of downloading Fall of the Rising Sun Ultimate.
I don't remember much about the game except for the fact that it triggers both my claustrofobia AND my fear of drowning so... Yeah, this should be an intense gaming experience
I've been taking a look at the forums and the community seems tight and kind, which is more than I can say about most online communities!
Hope everyone is doing great, take care and don't sink!