I just remembered that time I tried to play a Metroid Prime game and there was a trudging tutorial level and boss. I didn't make it past the boss. It was one of those invulnerable ones with regenerating shield blobs to deactivate and then you have to do a specific secret thing otherwise you get stuck in an infinite loop. I prefer when my bosses just take missiles into their brain and go skRWEEEee! thankyouverymuch.