I posted 2 videos of the first time I killed Dhartok solo with RDM and with different strats: one strat is to use all special trusts (aprox. 25 min) and the other is to use Monberaux and the rest of special trusts (aprox. 18 min). I use only Monberaux because it is super-hard to keep hate when there are a lot of trust healing and buffing.
All special trust video:
YouTube Video Placeholder
Monberaux and special trust video:
YouTube Video Placeholder