Mission 4 - Next Stop: Castlevania | Piles of Sacrifice and Dungeon Keys - First pass Castlevania: LoS 2 Guide

#2 Keyhole for a Dungeon Key

Keyhole located in the station from where the train left.

Another keyhole for a Dungeon Key can be found after the train crash. After regaining control over your character, go along the railroad tracks in the direction from which the train came - there's quite a long journey before you, so be patient. You will arrive on a station from where the train left. Go along the left wall and soon you should reach the keyhole (a Memorial is nearby).

#3 Keyhole for a Dungeon Key

Another keyhole is located near the place that you had to tear the cables apart (Zobek's Lieutenant was accompanying you). Standing in the way, that the cables you just destroyed are to your right, go straight ahead, turn right, jump down, and then get to a small hole in the wall, where you will find a keyhole for a Dungeon Key.

#3 Pile of Sacrifice

Pile of Sacrifice, below your climbing route.

You will arrive at a collapsed building - there's plenty of climbing and jumping here. Climb up a pillar situated at the center of the room and your ally will leave you. Continue your journey (remember that you can highlight your course by pressing the block button) until you reach something that previously was a second floor - there you will find a Pile of Sacrifice. Jump down, collect the Kleidos' Nail from it, and then get back on the ceiling.