Sadist

Sadist is a skill in Fallout: Brotherhood of Steel and that was to appear in the canceled Fallout: Brotherhood of Steel 2 as Sadistic (skills in these game work like perks do in other Fallout games).

Fallout: Brotherhood of Steel
Whenever the player character kills a creature, they will receive +5 (up to a maximum +25) Hit Points for having played Nadia or Patty, or receive +2 (up to a maximum +10) Hit Points for having played Cain.

Points requirements

 * 1 Rank: 16 Pts (+5 HP for Nadia and Patty, +2 HP for Cain)
 * 2 Rank: 32 Pts (+10 HP for Nadia & Patty, +4 HP for Cain)
 * 3 Rank: 48 Pts (+15 HP for Nadia & Patty, +6 HP for Cain)
 * 4 Rank: 64 Pts (+20 HP for Nadia & Patty, +8 HP for Cain)
 * 5 Rank: 80 Pts (+25 HP for Nadia & Patty, +10 HP for Cain)

Fallout: Brotherhood of Steel 2
An unspecified amount of health is restored to the player character for killing a creature.