How to save?

[Eudaimonia]

Played for an hour, no save points or menu option, I'm probably just being dumb, but how to save this game?

[Issen Nox]

There are save points around the maps. First one is outside the stronghold, when you swim through gate and get out of water. You need to use action button on them to activate save option. They look like this https://www.mobygames.com/images/shots/l/52423-legacy-of-kain-soul-reaver-2-windows-screenshot-the-savepoints.jpg

[Baziel Moon]

https://legacyofkain.wikia.com/wiki/Save_altars
As Above, the wavy obelisk platforms are what you're looking for. You'll find the first outside the stronghold and the rest in the subterranean pillars, swamp, uschtenheim and fire forge meaning you can easily access them between the major set pieces of the game

[Trapped in Purgatory]

The first one you can kinda quick save anywhere (I think, but not sure), this one you have to find save points. They are like this huge yellow thing.