I have been having major issues with Deathclaws attacking my vault, it happens far too frequently and each Deathclaws is too tough. Even with all the upper levels of my vault filled with really high level dwellers with good gear, the Deathclaws chew through them and always end up on the 3rd floor because they don't stay in each room for very long. I refuse to play this game any longer unless these Deathclaws are nerf'd.