Mission 3 - The Antidote | Piles of Sacrifice and Dungeon Keys - First pass Castlevania: LoS 2 Guide
Last update: 11 May 2016
#1 Pile of Sacrifice
After leaving the elevator look around - to the right of your actual position there's a corpse with Soldier Diary, and to the left you will find a Pile of Sacrifice.
#2 Pile of Sacrifice
Second Pile of Sacrifice is located in the place when you will encounter Riot Police for the first time. After the fight, go through a hole in the fence, but don't go into the building in the front - instead, turn to the right, climb up the ladder and collect a Kleidos Nail from a Pile of Sacrifice