Stealth run

A [Stealth] run is typically conducted with only Rogues and/or Druids in the party. The idea is to stay in Stealth, sneaking through the entire instance to the target Boss, kill the objective(s), then re-stealth and sneak back outside.

Note that "skull" type bosses scale with your level. In recent patches, these have all become more difficult. Roccor and Razorlash are probably still doable. The jury's out on Celebras. Plugger is generally considered a duo mob at present -- bring a friend (or a greater shadow protection potion which makes him quite soloable).

Soloable Bosses (lv 60)

A lvl 60 rogue or druid can often solo these.

Blackrock Depths

• Lord Roccor - Medium difficulty for 1 rogue or 1 feral/restoration druid
• Plugger Spazzring - Medium difficulty for 1 rogue

Maraudon

• Razorlash - Easy for 1 rogue
• Celebras the Cursed - Medium difficulty for 1 rogue
• Rotgrip - Medium Difficulty for 1 rogue
• Princess Theradras - Extremely difficult for 1 rogue

Stealth Bosses (lv 60)

• Lord Incendius in BRD
  • Easily done with 1 rogue + 1 druid. Due to a debuff Incendius gives, Fire Resistance gear is near useless.
• Lethtendris in Dire Maul East
  • Difficult with 1 rogue, doable with 1 druid and 1 rogue.
• Mother Smolderweb in LBRS
  • Difficult with 1 druid, doable with 1 druid and 1 rogue.
• Mor Grayhoof (and War Master Voone) in LBRS
  • Difficult with 3 druids, doable with 2 druids and 1 rogue.
• Shadow Hunter Vosh'gajin in LBRS
  • Requires minimum 2 well geared rogues and 1 druid. Vosh'gajin and her 2 priests frog melee attackers and go after the healer. Stuns should be used where possible to prevent frogging. A fast run of Vosh'gajin can take as little as 15-20 minutes.
• Morphaz in Sunken Temple
  • Very tough for a single rogue, even fully buffed at level 60. Morphaz has a bigger and stronger friend named Hazzas and can't be pulled separately. He's also immune to poisons and stuns. He's fairly easy with two 54+ rogues; take him down fast and then [Vanish] if necessary. After Hazzas leaves you can loot Morphaz. (This is a fast way to get   [52D] The Azure Key for rogues that have picked up the quest.) Buffing with a  [Nature Protection Potion] is highly recommended.
• Razorlash in Maraudon
  • Difficult with 1 rogue or druid, until greater gear is obtained. Easily Doable (level 60), no matter the combination.
• Princess Theradras in Maraudon
  • Extremely difficult to solo as a 60 rogue (/w 8/8 T2). If you intend to solo this boss, use as much self healing items as possible ( [Darkmoon Card: Heroism], Bloodfang Armor, Lifestealing, Crusader).  [Nature Protection Potion] also help with [Dust Cloud]. Fight becomes very easy with a Druid healer.
• Plugger Spazzring in Blackrock Depths bar.
  • Requires Shadowforge key or high level lockpicking by a rogue. Buy beer from Plugger, stand by Dark Iron faction guy, place a beer at your feet. Kill the bar patrons when they come and drink it until plugger stands alone. Shadow and Fire protection potions makes it easy.
• Pusillin in Dire Maul.
  • Difficult as a rogue or a druid - stealth naked, talk to Pusillin 4 times (and die almost certainly each time). Then he will run upstairs to a platform, where you can talk to him the 5th time (run away quickly). You will be followed by 5 little imps, which you can mill down one by one until (prepare to die once unless you're a really big bear). If you can get him alone, he's a mean fire damage guy, wear FR gear and take a potion. He drops  [Crescent Key].

Other Stealth Runs

• Mining Dark Iron: Dark Iron stealth guide
• Scholomance: Scholomance stealth run
• Attunement to the core
• 2nd/3rd Fragment Attunement

Interesting info on lethendris & incendius : http://www.roguespot.com/guides/AMR1.htm

also see: Rogue Solo List