I'm looking for mature-themed Dungeon Crawlers with deep party customization, complex dungeon designs, hard as nails difficulty and replay value for portable consoles, I have a Switch, a Vita and a 3DS; SMT: Strange Journey, Saviors of Sapphire Wings/Stranger of Sword City and Undernauts catched my attention, if you can only choose two of the aforementioned titles, which games you will buy? Any other mature-themed Dungeon Crawler reccs for portable consoles are welcome.