In your early explorations of the first region in Phantom Blade Zero, you will come across to what is effectively a key hub / settlement are for this part – the one across a huge bridge with several NPCs in the camps and tents around.
On taking the right, you will come across a door that requires a Thieves Camp Dungeon Key. Till you get this, your access to everything that lies this side of the camp is restricted. Here is how to get the Key, and move ahead in Phantom Blade Zero.
Thieves Camp Dungeon Key Location

The Thieves Camp Dungeon Key is located in the Cliffside Lodge area in the Crimson Forest. For now, progress on the main quest, till you eventually move towards the eastern part of the map, and come across a fast travel point – Cliffside Lodge. This is where you can get moving on the Thieves Camp Dungeon Key.

Take the ladder right behind the Fast Travel point. There will be a couple of enemies here, clear them out, and go into the next room with all the lit candles. Here, right ahead, is the Crimson Forest Cellar Crank.

Drop down below, and use the Crank. You can now descend down using the stairs on your right into a cavernous hallway.
On the right is an enemy in the middle of a poison filled area. Either take him out, or ignore – we don’t need to go there to get the Key. If you are looking to get him out of the way, bait him towards you, away from the poison swamp. Rush in, attack a couple of times, and move out, he will then follow you to the clear area. Watch out for his one attack where he rolls towards you, other than that, you should be able to take him down, as his red attacks are easy ones to use against him.
Either way, our target lies on the path straight ahead. Take down the lone enemy, and then drop down a couple of levels. There will be a group of three enemies here, nothing that you can’t handle though.

On one side, will be a Crank that is missing and hence you cannot progress there, so proceed through the other side till you come across a Memory Flower.

Get the Flower, and behind it, use the climbable wall and the steps ahead. On the right, you will see a orange collectible, which happens to be the Thieves Dungeon Key that we were searching for. Also loot the Crank to progress this area, and a Blackstone Fragment from the chest nearby.
You can now return to the settlement, and open up the locked door using the Thieves Dungeon Key. In this area, if you have not already done so, is where you can close the Honor Among Thieves side quest in Phantom Blade Zero.




