So I cleared (literally everything, after not being able to advance) every single mob and everything is gone trying to look for the 5th chest.
None of these mobs dropped keys (I ran back to my base and brought ones I had from other areas) hoping they may work.
But they didn't.
There is a door I cannot enter (and I am assuming holds the 5th chest)
But no keys dropped here.
#Quest Not Finishing, No Keys Dropping From Mobs
1 messages · Page 1 of 1 (latest)
Mobs respawn every 2 hours so if you come back later there will be mobs and they should drop plenty of keys
I could be misremembering and you get the keys from other places.
I have keys on me from the MSQ, this is an exploration clear area, not even a SS, and the keys I do have aren't working.
So there is no quest to it to know if the keys are elsewhere.
And the mobs aren't dropping keys.
This is my 3rd time coming back here.