Hi everyone, I need help with The Big Dig quest, after killed the king mirelurk, I got stuck in that room, can't find a clue to go to next area.

Check all the walls for another weak point in the wall for Sonya to dig through, sometimes they are easily missed. "Activate" the weak section of the wall, and Mel will send Sonya the eyebot to dig/blast through. Once you reach the last section of wall to dig through (there are several), "activating" it will not work. You'll have to talk to Mel before you'll be able to get through. Hope this helps

It's a bit of a trick but since you asked that room with the king and I got an x-01 armor there almost complete is a red herring. Go back to the first room. Try another route.

I had to go online for this one as well, because it's not obvious.

After you kill the Mirelurk King, you need to speak with Mel and select the "I'm ready" option. Once you select this, the Eyebot will open the last path.

Had to look up this too. The weak spot was obvious but it wasn't interactive until I spoke to Mel.