Low level smell: No rewards.
Medium Level Smell: A line leads you to nearby demons.
Max Level Smell: Opening thread (exectues at lower hp)
Low Level Hearing: No rewards.
Medium Level Hearing: Locations of attacks are revealed to you via circles around that area (spc sl dog!!)
Max Level Hearing: Enter a state where you close your eyes and focus on the sounds around you. (Larger range hearing, auto dodge for 2 attacks.)
Low Level Sight: No rewards.
Medium Level Sight: Remove a little bit of fog (if there isn't any fog in the game decrease dof or night vision)
Max Level Sight: Night Vision, no dof and no fog.