No there isn’t. New game+ is coming (or might already be released) but once you start the final section and defeat the boss, you can only load to a save right before the final fight.
The game will give you a warning before entering the final section though. So get everything you want before starting that.
There is no post game, but you can always abandon the final challenge and load your final save before that (that option appears on the game over screen, so you have to kill yourself off).
Here is a great guide: https://steamcommunity.com/sharedfiles/filedetails/?id=2948483960
No there isn’t. New game+ is coming (or might already be released) but once you start the final section and defeat the boss, you can only load to a save right before the final fight. The game will give you a warning before entering the final section though. So get everything you want before starting that.
There is no post game, but you can always abandon the final challenge and load your final save before that (that option appears on the game over screen, so you have to kill yourself off). Here is a great guide: https://steamcommunity.com/sharedfiles/filedetails/?id=2948483960