Keep verve up the whole run, Sudden Lunge everything unless you need 500HP heal objectives done.
CDC > Req (want the weaker WS closing to leave the mob with enough hp) and burst with spectral floe or crush for 30K MB *Note: Do this on transcended mobs, normal mobs don't have the HP needed to get the clear.
Burst affinity + spectral for 15k solo nuke.
CDC > CDC for 30k WS (skillchain damage counts) *Note: Do this on transcended mobs, normal mobs don't have the HP needed to get the clear.
Be prepared to swap trusts to suit your needs, DNC trusts are great at spamming abilities quickly and let you sub THF for extra crystal drops.
Shantotto2 for MB completions, fast blade > burning blade is weak enough for the normal mobs to survive and her to get a MB on, if you don't have either 30k ws or 30k MB its generally best to pull a transcended as you can get quite a few MB on them before they die doing this.
Fast blade > burning blade > Fast blade > repeat however long you need for multi step skillchain completion.
Default trusts:
August (a good tank in general makes this so easy, not needed but makes it easier, either aggro multiple for 500hp heal objectives or desummon tank til you get them)
Unity WHM (Apu/yoran, anyone else will have to be resummoned often due to MP issues but its not a huge deal)
King of hearts (Refresh2, quick dia spam, not needed but I cleave remaining mobs after objectives are done so like the refresh)
Joachim (Don't have to maintain mighty guard most of the time)
Last spot I generally rotate;
Shantotto2 (MB objectives)
Qultada (30k WS, attack/da buffs, Sylvie unity is also good for this)
random dancer trust (JA spam, august himself can hit all the JA but just to get it done quicker)
Assuming Master, prob not the most ideal spellset but don't find I have to min/max for omen:
Delta Thrust
Barbed Crescent
Thrashing assault
Heavy Strike
Acrid Stream
Erratic Flutter
Nat. Meditation
Sudden Lunge
Diffusion Ray
Fantod
Sinker Drill
Paralyzing Triad
Subduction
Spectral Floe
Entomb
Dream flower
Cocoon
Magic Fruit
Generally I'll do objectives, then cocoon up in DT idle and aggro rest of floor (or pack by pack on final floor) Dream flower > entomb > floe which kills all but transcended, if you have burst up can just one shot with floe.
Kill transcended with melee, Don't magic cleave the fairies, just melee them one by one, Try to have burst affinity up for the floating eyes.
Dream flower if you get overwhelmed by adds. Just try it out, its really easy for blu.