Heavy sleeper?

He is tuff to break. They make a padded version too, which is even worse.

CKY:
If a vibrating phone wakes you: They make alarms clocks that are unbearably loud and vibrate hard as well.
Search on amazon. There is bound to be a ton.

OT:
I used to find I would turn alarms off while still asleep. Moving it away from my bed solved it for me.