Supernova: This the hardest difficulty. It's recommended for advanced players. It can only be selected at the start of the game. See below for details. If you change your mind midgame you can drop the difficulty down but cannot raise it back to Supernova after that.
Timestamps:
00:00 - Main Menu
01:08 - Opening Cinematic
02:53 - Attributes
05:47 - Skills
07:40 - Aptitude
08:51 - Appearance
12:12 - Summary
13:30 - Game Start Cinematic