These provide backstory and are required for 100% completion achievements.
Permanently increase the duration of your SlowMo meter. f-e-a-r-fear-platinum
Melee is surprisingly powerful. A mid-air scissor kick (jump + melee while moving forward) can one-shot most standard enemies. These provide backstory and are required for 100%
To survive the intense AI and supernatural encounters, master the following: f-e-a-r-fear-platinum
Finding boosters is critical for increasing your survivability throughout the campaigns. Permanently increase your maximum health.