There is no guide for this game yet. But apparently it is EASY POINTS!
Viking Conqueror Normal - 30 points
Reach the end of the game on normal difficulty
Viking Conqueror Hard - 60 points
Reach the end of the game on hard difficulty
Niflberg Supplies Freed - 20 points
Liberate the farm and the quarry in Niflberg
Dragon Summoner - 15 points
Find and charge the dragon gem Hugin and dragon amulet, and summon a dragon
Skullbagger 1 - 15 points
Collect the 6 skulls in Darkwater
Savior of Niflberg Normal - 25 points
Liberate Niflberg completely on the normal difficulty level
Savior of Niflberg Hard - 35 points
Liberate Niflberg completely on the hard difficulty level
Galcliff Supplies Freed - 20 points
Liberate the farm, still, lumber mill, and the quarry in Galcliff
Dragon Master - 15 points
Complete the second dragon gem, and summon a dragon
Skullbagger 2 - 15 points
Collect the 6 skulls in Holdenfort and the 6 skulls in Caldberg
Demon’s Nemesis - 40 points
Kill Hel’s Harbinger Drakan
Redeemer Of Galcliff Normal - 30 points
Liberate Galcliff completely on the normal difficulty level
Redeemer of Galcliff Hard - 40 points
Liberate Galcliff completely on the hard difficulty level
Isaholm Supplies Freed - 20 points
Liberate the farm, still, lumber mill, and the quarry in Isaholm
Dragon Overlord - 15 points
Recover the final dragon gem, and summon a dragon
Skullbagger 3 - 15 points
Collect all the 4 skulls in Thornvik
Death King - 25 points
Finish off 150 Legion with fatality moves
Demon Eviscerator - 20 points
Finish off 100 Legion with fatality moves
They Never Saw Me Coming - 20 points
Execute 100 sneaky kills
Giant Killer - 25 points
Find and slaughter a Legion Giant
The Flames of Freya - 20 points
Buy flamepots and incinerate 10 Legion soldiers with them
Thor’s Mortal Lightning Rod - 5 points
Send a Legion back to the underworld in the most lightning-tastic way imaginable
Odin’s Doomsinger - 5 points
Use the ultimate fire attack to kill a Legion
Heimdall’s Enforcer - 5 points
Glacially wipe out a Legion using the ultimate ice attack
Deadly Axe Juggler - 15 points
Kill 5 Legion just using Throwing axes
Euthanasia Euphoria - 5 points
Use your defensive bash to knock your Legion foes to their doom!
Friend Of The People - 10 points
Power-up over 500 Vikings in your armies with runic magic
Assassin of Assassins - 15 points
Locate and kill a Legion Assassin
Blinded To Fear - 45 points
Kill 50 Legion without using a health potion
Viking Slaughterer - 12 points
Learn a total of 4 new moves
Viking Butcher - 10 points
Master the first new move at the Battle Arena
Viking Slayer - 14 points
Master a total of 8 new moves
Viking Warrior - 16 points
Master a total of 12 new moves
Viking Blademaster - 18 points
Learn all the moves in the game
Demon Hacker - 5 points
Finish off 25 Legion with fatality moves
Secretive Rogue - 20 points
Complete the quest to sneak into Darkwater
The Perfect Killer - 20 points
Kill a Legion Champion without being hit
Killer of Champions - 5 points
Kill 10 Champions
Killer of Giants - 5 points
Kill 5 Giants
Hero Of Darkwater - 10 points
Lead your army to victory at the battle for Darkwater
Hero Of Holdenfort - 10 points
Lead your army to victory at the battle for Holdenfort
Hero Of Caldberg - 10 points
Lead your army to victory at the battle for Caldberg
Hero Of Thornvik - 10 points
Lead your army to victory at the battle for Thornvik
Hero Of Midgard - 20 points
Lead your army to victory at the final battle for all Midgard
No Need For Immortality - 50 points
Lead your army to victory at Hel’s Fortress without need for immortality
Thirst For Blood - 10 points
Kill 50 Legion soldiers
Lust For Blood - 20 points
Kill 100 Legion soldiers
Champion of Champions - 25 points
Find and defeat a Legion Champion
Berzerker - 35 points
Kill 200 Legion soldiers
Slaughter Master - 50 points
Kill 500 Legion soldiers