You can take 2 tasks at once! Go to Grizzly Adams and say 'task', choose task - say 'yes', cancel task - say 'cancel' 'task name', report say 'report' and take your reward! Check your current chosen tasks say '!task list'

Monsters LeveL Required Kill Required
Reward
Trolls: min:6 - max:29 100 10x
Goblins: min:6 - max:29100 10x
Rotworms: min:6 - max:29150 15x
Tarantules: min:6 - max:2975 15x
Stone Golems: min:6 - max:2975 15x
Larvas: min:6 - max:29150 15x
Slimes and Beholders: min:6 - max:39100 25x
Scarabs: min:6 - max:39200 35x
Minotaurs: min:6 - max:49 250 35x
Dwarfs: min:6 - max:49 250 40x
Cyclops: and his cousins min:6 - max:59300 50x
Orcs: min:6 - max:59 350 50x
Earth Elementals: min:40 - max:80300 150.000 experience 10x
Ice Golems: min:40 - max:80250 120.000 experience
Crystal Spiders: min:40 - max:80300 150.000 experience
Heros: min:40 - max:80400 350.000 experience
Giant Spiders: min:40 - max:80200 250.000 experience
Undeads: min:40 - max:80700 200.000 experience 20x
Dragons: min:40 - max:80400 300.000 experience
Black Knights: min:50 - max:150500 600.000 experience
Wyrms: min:50 - max:150700 1.000.000 experience
Frost Dragon: min:50 - max:150600 1.000.000 experience
Askaraks and Shaburaks: min:50 - max:150700 1.000.000 experience
Lizards: min:50 - max:150800 1.000.000 experience
Behemoths: min:60 - max:150600 1.000.000 experience
Destroyers: min:60 - max:150500 1.000.000 experience
Dragon Lords: min:60 - max:150900 1.250.000 experience
Hydras: min:60 - max:150900 1.250.000 experience
Hellspawns: min:60 - max:150700 1.250.000 experience 5x
Nightmares: min:60 - max:150500 1.250.000 experience
Serpent Spawns: min:60 - max:150500 1.250.000 experience
Asuras: min:80 - max:180800 1.250.000 experience
Ice Witches: min:80 - max:180700 1.250.000 experience
Drakens: min:80 - max:180700 1.500.000 experience
Deeplings: min:80 - max:180900 1.500.000 experience
Hives: min:80 - max:180700 1.500.000 experience
Medusa: min:80 - max:180700 1.500.000 experience
Infernalists: min:80 - max:180800 1.500.000 experience
Warlocks: min:80 - max:180900 1.500.000 experience
Grim Reapers: min:100 - max:200700 1.750.000 experience
Frozemoths: min:100 - max:200500 2.000.000 experience
Ghastly Dragons: min:100 - max:200500 2.000.000 experience
Demons: min:100 - max:200666 2.000.000 experience
Frazzlemaws and Guzzlemaws: min:120 - max:9991000 2.500.000 experience
Demon Outcasts: min:120 - max:9991000 2.500.000 experience
Undead Dragons: min:120 - max:999350 2.500.000 experience
Hell and Fire: min:120 - max:9991000 3.000.000 experience
Plaguesmiths and Blightwalkers: min:120 - max:9991500 3.000.000 experience
Defilers and Son of Verminors: min:120 - max:9991500 3.000.000 experience
Losts and Torturers: min:120 - max:9991500 3.000.000 experience
Magical Pits of Inferno: min:120 - max:9991500 3.000.000 experience
Juggernauts: min:120 - max:999300 3.000.000 experience