How to: SOLO Ulduar's Dwarfageddon Achievement

Your vehicle will be significantly better with the more combined item level you have. If you have all best in slot, you'll be able to kill the Sentry's in about 6 hits, otherwise for my lock, it took probably 30. Same with the nuking, you'll only have to nuke twice to kill everything if you are well geared.

You can bring as many friends as the instance will hold to do this. I advise to only have a maximum of 2 people run out on bikes and clump dwarves, the other should ride passenger or just stay close in other vehicles. Too many people might split the dwarves too much and make you take longer than 10 seconds.

Doing this will not get you saved to Ulduar. You yourself would have to not be saved to Ulduar already and go into a fresh one that hasn't killed Flame Leviathan yet in order to do this event. You'll have to invite a friend and form a raid to get inside, but after that you can drop raid and it wont kick you out and you can confuse your guildies when your achievements pop up