Telltale

Telltales are particular NPCs found in certain places who can send you on special quests where you fight tougher bosses and stronger versions of enemies. These quests are repeatable and you can get a lot of XP and Caps from them, but it's the main way to get Cute Little Puppets, which can enable your access to special places like Pomona. You also get some other random rewards after completing a Telltale quest.

Junktown

• Need Level 6. Blood Viper Leader (428 HP). He is easy to kill in TB mode. Uses a 10mm SMG.
• Although he is wearing Leather Helmet and Combat Leather Jacket, use 10mm AP because you hit low or no damage him.
• 1k XP from killing him and 1250 XP after completion.
• Loot: 700 Caps / 1 Stimpak / 10mm SMG / Cute Little Puppet / tool / 2 Rot Gut
• Location: https://i.imgur.com/kWsHdrO.jpg
• NPC: Just right of Gizmo's Gasino

Junktown

• Need Level ?. (name of enemy here) - (?? HP).
• ?k XP from defeating, and ?k XP after completion.
• Loot: ??? Caps / ? (something) /  ? (more)
• Location: (will find it)
• NPC: (info here)

Hub Graveyard

• Need Level 40. Unarmed alien fight - Court of the Desert King (2500 HP).
• 6k XP from killing him, 20k XP for completion.
• Loot: 12000 Caps / Mirrored Shades / 10mm SMG / 120 JHP and 30 AP 10MM ammo / 5x Mentats / One High Quality Iron Ore
• Location: https://i.imgur.com/iEeQl7e.jpg

Hub Oldtown

• The Crazed Vault Dweller (357 HP), 10mm SMG
• Easier one for 700 XP, and another 1000 or 1500 XP at completion.

Vault City

• Need Level 35. Molerat King - Crater of the Soulfed
• 3125 XP for kill & 18k XP for completing it.
• Loot: 10.000 Caps and random loot
• Location: He's in the bar near the entrance with McRae.

Gun Runners

• Need Level 30. Centaur fight - The Devourer of Souls (2000 HP). Very easy fight.
• 4k XP from killing it, and 16k after completion.
• Loot: 9K Caps, Tool, Metal Armor, Doctor Bag, 5 Buffout, 2 Uranium Ore
• Location: https://i.imgur.com/XLZeizf.jpg

Vault City

• Need ?? Level. Human fight - Ambassador of Pain (883 HP). He's in APA with Minigun (Avenger?)
• 2200 XP for kill & 13k XP for completing it.
• Loot: ??? Caps
• Location: https://i.imgur.com/qrf4IyN.png

San Francisco

• Need Level 24. Human fight - Dr. Rikktor's Crater (??? HP). Power Armor and Plasma Rifle.
• Warning: This is a rough fight. He can instantly kill you if his crit roll is high enough.
• Criticals of 120+ are not uncommon, he aims for the eyes a lot.
• 3k XP upon killing them; 14k XP upon turning in the quest.
• Loot: ??? Caps
• Location: He's near the door to the tanker outside.

San Francisco

• Need Level 24. Desert Stalker fight - The Great Emperor with high HP.
• Loot: wip
• Location: Bald guy in Leather Armor with Sniper Rifle standing guard in the small courtyard outside of Mercenary Recruiting building in the center of main street in San Francisco, just up from the hammer-and-sickle monument.

Shady Sands

• Need Level ??. Fight (enemy name here) with ?? HP.
• Loot: wip
• Location: (will find it)

The Cathedral

• Need Level 18. Human fight - The Last Church of Illuminatus (883 HP).
• 1600xp from killing him, 10000xp when turning quest in.
• Loot: 3500 Caps / 90 Small Energy Cells / Ripper / Cute Little Puppet / 5 Beer / 2 Necklace
• Location: https://i.imgur.com/QIOt5bd.png (You need pay 10 Caps to enter)

The Library

• Need Level 15. Human fight - The End of the Fallen (800 HP). He wields M60, 200 rounds of 7.62 ammo, Psycho, Rotgut, Combat Leather Jacket and helmet
• 800 XP on kill, 8k XP for completion
• Loot: Doll, Shades, Tool, Ripper, 2 Radaway, 6 Barley
• Location of Telltale: https://i.imgur.com/Tpng0oV.jpg

New Adytum

• Need Level 9. Human fight - Tyrate's Last Stand (700 HP). She uses an Incinerator, so better be careful.
• 750 XP from killing her, 4500 XP after completion.
• Loot: 2500 Caps / Spectacles / Flamer / 65 Flamer Fuel
• Location: https://i.imgur.com/i7hhGax.png