The question was: where can this guy farm with his 130 hp
My answer is:
This build has so far successfully been used to farm:
Mobs/Various
All except Gargoyles in Old Ascalon (Hard Mode only)
Am Fah
Behemoths (of all sorts)
Bladed Aatxe In the underworld- no more than two at a time, due to Riposte
Djinns (of all sorts)
Ettins Only tested in North Kryta. Possible to farm normal mode and hard mode, eventually the ettins 'forget' to use healing signet for some reason, possibly a bug.
Fire Imp
Hekets (Mobs with healers cannot be killed because Blue Tongue's will spam Healing Ring and Word of Healing.)
Hydras (Prophecies campaign)
Insects (all sorts)
Jade At the beginning of Ring of Fire mission, avoid the mursaat and pull the Jade alone. Make sure you're Infused first!
Jade Brotherhood (Factions campaign) (Easier to kill with 58 HP, you could get unlucky with interrupts from Jade Brotherhood Mesmers.) It is possible to withstand up to 7 warriors whilst being attacked from others. Always take out the Ritualist in a group first, you won't be able to do much damage if they are alive.
Kirin
Minotaurs
Mountain Trolls (Prophecies campaign)
Plants (mirage iboga's can be a pain but it can be done) only tested in Nightfall campaign
Skale It's very easy, just charge them and use the build correctly. Also it will be a pain but you must keep all 3 enchantments up, fighting 1 or multiple skale due to their degeneration.
Stonewolf(Very easy, die once and use build correctly)
Titans in Nightfall (See tips below)
Undead especially from The Undead Hordes quest Swap out Reapers Sweep for Vow of Silence so the sorcerers don't blind you, take 1 attribute out of Scythe Mastery and put it into Mysticsm so VoS will last 9-9.7 seconds.
Undergrowth
Warden (Watch out for knockdowns from Wardens of the Trunk)
Destroy the Ungrateful Slaves quest (possible to farm in hard-mode) ([1], it would be best if your health is below 20 so you don't take to much damage)
Warrior
Bloodback Morrob (Die first or the excessive warriors will over power you.)
Chor the Bladed (Position him beside his healer, and put pressure on the healer until it dies, then finish Chor)
Krogg Shmush (Use Vow of Strength, Armor of Sanctity, and Aura of Thorns instead of attack skills.Takes a bit long but he's no problem. Watch for interrupts.)
Mahto Sharptooth (By using the hill to the west of Mahto, you can control the damage/energy you take by using it to block the Heket using their wands, dying once helps)
Robah Hardback (Very easy, dying once makes it a bit easier)
Colonel Chaklin (Enchantment removers are near)
Molotov Rocktail (Run can be hard, make sure you enchant yourself before his seige knocks you down)
Lissah the Packleader(might want to bring a +30 health scythe and die twice,can solo on hardmode)
Fenrir
Ranger
Tundoss the Destroyer (You may want to bring henchmen or heroes to kill the two healers near him, then flag them away.)
Whuup Buumbuul (Takes a while, line him up with the Mountain Trolls to keep up your health)
Zelnehlun Fastfoot (Die twice, equip +30 HP scythe, then kill him, avoid Rampaging Ntouka on the run, they will strip your enchantments. Also try exchanging eremite's attack for harrier's haste to break aggro)
Johon The Oxflinger (Die once and attack him, ignoring the Stonewolves)
Dzabel Land Guardian (Near Jerneh Nightbringer, cannot be done if there are Blue Tongue Hekets. Can take a while because of Troll Unguent.)
Monk
Chidehkir Replace Mystic Vigor with Scourge healing and put Earth Prayers to 8 and whatever is left into Smiting Prayers. (Not recommended to farm Chidehkir for 80% of the time a Kournan group spawns next to his group and Chidehkir cannot be pulled to any spot that he will follow to because the Kournan group patrols all areas he can be pulled to(group contains a mesmer with shatter enchantment))
Keshel the Voracious (Easy) Normal Mode only.
Shen (easy but die once first)
Necromancer
Eshekibeh Longneck
Ghial the Bone Dancer (Consider taking Heart of Fury to help counter Faintheartedness)
Jerneh Nightbringer (Video, Easier to try to kill him with 58 HP. Buhon and Robah spawn near him. It's easy, Nightbringer first, then Buhon and at last Robah)
Mabah Heardheart
Terob Roundback (Very Easy/Easy. Die once first. Careful of Ntouka Birds, if he has Healers the run is over because the healers will run up to him and spam healing ring and the fight will never end.)
Mesmer
Eshim Mindclouder
Jin
Neoli the Contagious (Hard)
Yamesh Mindclouder
Yammirvu (Better if you die once)
Elementalist
Birneh Skybringer (Get your hp below 50 and use Fleeting to make it easier. If a monk is in his group, kill the monk first - try to hit a number of targets at once to make this easier)
Buhon Icelord (Easier by dying 2 or 3 times)
Exuro Flatus (Video (Very Easy) , Easier if you die twice and weild a +30 health scythe
Hajkor (Video, use the wurm, before aggroing him, wait for the mandragor group to arrive, kill them, go for the small melee mandragor first, then die once, then pull him and his group away from the margonites and then kill him.)
Korr (Video, if you go 61hp (30% DP and trade out one of your armor pieces) and equip Fleeting Stability it makes it exceptionally easier)
Korshek the Immolated
Kormab (Arcane Zeal makes this much easier)
Lian (Easiest way is to pull the knight group in front and solo them then move on to Lian's group)
Suneh Stormbringer (Hard Mode) Easy with 15% DP, even easier wih 25% DP.
Assassin
Lunto Sharpfoot Die once or twice first (If he has any healers near him, finish them first by positioning lunto and any other melee minions at one side of the healer, and hit Lunto, the healer and his minions at the same time)(user comment: just lure the closest of lunto's minions and the whole group will come running to you, then just kill the monk)(User comment: Lunto can't be farmed well anymore, if at all, a change to a skill the monks use has made the mob almost impossible to be defeated, but if you are willing to stand there for half an hour until the healers finally fail go for it.)
Xuekao
Faveo Aggredior (Video, Die once and replace Mystic Vigor with Heart of Fury to speed up the process)
Ritualist
Cho
Lieutenant Kayin
Dervish
Acolyte of Balthazar (No dying required, he is relatively easy to farm, though this works well in a group where the 130hp derv attacks first)
Acolyte of Melandru (Die once, kill seers first, cover protective spirit with mystic regeneration and mystic vigor. Rezone if there are any priests.)
Bubahl Icehands (Easy, die once then kill him)
Corporal Suli (may need to rezone for a good spawn)
Leilon
Marobeh Sharptail (Make sure you hit him alone. Let the mob provide energy. He does take a good amount of effort)
Vahlen the Silent (Die once, then kill him. It may be easier to die twice, because then they only do 1 damage)
Paragon
Jishol Darksong (Medium, Takes very long time, but possible)
Pehnsed the Loudmouth (Takes very long time, but possible)
Shakor Firespear
Wandalz the Angry (Take henchmen to clear the Kournan Seers and Kournan Oppressors, then keep flagged off radar.)
Or Easier:
Scroll down xD