lockpicked with a DC25 Sleight of Hand check, or with the spell Knock. However you open the wardrobe, you should then be able to pass through it to enter the secret room functioning as the killer’s hideout.
You’ll begin the Confront the Elder Brain Quest way back at the end of BG3’s Act 2, once you actually find out about the Elder Brain’s existence and the Chosen Three. And now that you know about the source of your problems, Act 3 will have you looking for a way to confront th...
Since your main guy is an archer, a fun thing to point out is that if the enemy is blinded, they literally can't find you. Your archer can just shoot them from a distance and they'll stand there like an idiot all "What was that? Who goes there?". You've gotta...