Over the last 3 weeks I've played probably close to 2 hours total (real time), and in that time I've had 13 deathclaw attacks. I think it may have started because I exited the app during an attack, and somehow it became a loop. I defeat the deathclaws, then no more than 2-5 minutes later I get another attack. I haven't seen any raiders since I saw my first deathclaws. A friend of mine has the iOS app and he has never seen a deathclaw attack.
There needs to be an update where any vault door guards chase the intruders (raiders, deathclaws, etc) throughout the vault, or even an alert status where weapon-wielding dwellers in surrounding rooms call to arms.
I have almost 20 dead dwellers right now, as soon as I heal or revive some, another attack comes. This is ridiculous. Please help!