
Using this will allow you to acquire the Ruby Key and add it to your inventory. To find the first key, the Ruby Key, you’re going to need to make your way to a resting place and look out for the “Recall” option. Players use a deck of cards to battle in Slay the Spire. Unlike the fragments, which are unlocked by beating the Act 3 boss on each character, you’ll need to find the keys each time you want to make the run into Act 4, so knowing how to find them effectively will be key to your success in this endeavor. Obtaining the three different keys will be the most difficult portion of this run. There are three keys that you need to find and acquire the Ruby Key, the Sapphire Key and the Emerald Key.

This is where the various keys that you need to acquire to unlock Act 4 will go. You should notice a small symbol next to your name now. This task might take you a bit, but once you complete it, start a new run of the game with any character.

In order to unlock Act 4 you’re going to need to first “win” the game by defeating the Act 3 boss with all of the game’s characters. If you’re trying to unlock Act 4, then you’re going to need to be ready to put in quite a bit of work.

Late last year the developers added a new act to the game, giving players the ultimate challenge. Slay the Spire challenges players to complete a series of dungeons, defeating bosses and exploring different paths as they progress.
