I just had a molerat infestation where one of the rats was invincible and wiped out my entire vault. I killed the rest of the pack fine, but the last one was unkillable. Wiped out my entire we'll armed vault of 32 people including a level 37 Harkness with battle armor and a focused plasma rifle. I really didn't want to restart, but I guess I'm going to have to, after this bug has been fixed of course.

Oh fun, now there are not just Murder Roaches, but Murder Molerats.

I wouldn't have experienced even regular molerats myself, as I shut the game down after getting deathclaw attacks in five minute intervals.

I've had THREE deadly molerat invasions so far today. This last time, they killed 17 out of my 60 vault dwellers and injured just about everyone else. And all this after I'd spent quite a bit of time trying to recover from the 1st and 2nd molerat invasions - paying to revive dead dwellers, restocking stimpaks, arming everyone with better weapons, training everyone, etc. The molerats don't just come up in one room, they come up in like 6-10 rooms at the same time. And in spite of having most of my dwellers armed and armored, 50 stimpaks stockpiled and purchasing a Mister Handy, I can't fend them off without tons of deaths and injuries. Then all the dead bodies lay around making everyone miserable - plus the 2000 caps to repair Mister Handy.

The glitch seems to be connected to on particular residence room - that's where the infestation always starts and then immediately spreads across the vault. I've tried to delete the room but it always says that I can't, because there are too many residents. But I only have 60 residents, and it says I have space for 98, so I should have plenty of room.

I've run into the invincible molerat problem too.

Had a diner with 6 people in it, all armed. Killed all the molerats except one. He butchered everyone. Used all my stimpaks fighting him. Dropped 6 more people in, armed. He killed them too. After murdering more than a dozen people, i left the room empty, and he burrowed out. Then the adjacent 4 rooms all spawned mutliple mole rats.

All my armed dwellers were dead already, so ...

This same vault killed raiding deatchclaws, so these molerats were obviously invincible.

There's no real recovering from this. If i had 10,000 caps, i couldn't bring all the dead back to life.

Very frustrating. I quit....