>>29800657SM Nuzlock can be pretty brutal, depending on if you go with "1 Pokémon per route" or "1 Pokémon per area", since routes are split up into multiple chunks now.
The fights scale pretty quickly now. With the gen 5 EXP scaling and the +250% from EXP share, they can go pretty wild with the fights, and they did. Game hits especially hard when you don't have reliable access to Dark or Fighting mons on the first island.