( thats without tricks of taking tons of damage under Purgatory)
Colossus: 3PPM on melee attacks that land, or are dodged, or parried, with a 3-second cooldown.
it seems that these weapons enchanted with the above enchant will make DK soloing a lot easier. that is, of course, if the level requirement of those weapons stay above 372+ in MoP. if not, you could always level to 83/84 for these.
last time i checked, you had a list of solo'ing achievements in your signature, i don't see it anymore.
-- We were concerned that Blood DKs were too susceptible to spike damage. Blood DKs rely on being able to take damage and then heal it back, despite taking the largest hits of any tank. This works fine most of the time, but strings of unavoided hits or really large hits in a row might have presented a problem. We chose not to reduce damage taken, but to increase their maximum health instead. The stamina buff from Blood Presence from +8% to +25%.