How to Open the Red and Blue Door in Undertale
To open the red door in Undertale, you need to get the True Pacifist Ending by sparing all bosses and befriending specific characters like Alphys, Papyrus, and Undyne. For the blue door, it's located in Snowdin and requires you to dodge all of the credits. Good luck with those mad dodging skills!
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The red door opens only after achieving the True Pacifist Ending. Be a good kid and don't fight anyone! The blue door unlocks after you dodge every name in the end credits. Easier said than done, right?
Red door: True Pacifist run. Blue door: Dodge all credits. That's it.
You need to finish a True Pacifist run to open the red door. To open the blue door, clear all credits by dodging every name, which unlocks the door in Snowdin.
For the red door, just be besties with everyone and don't kill anyone! The blue door? Just dodge like a boss during the credits.
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