ACHIEVEMENT - HOW TO UNLOCK
Bounty Hunter - Complete all bounty side quests
Collect 'em all! - Unlock all special units
Fusion Fanatic - Triple fuse an attack formation in battle
Hero of Might and Magic - Complete all main quest and side quest objectives in all Campaigns
Legend of Battles - Reach level 10 in online multiplayer mode
Online Hero - Win a battle in 1 vs. 1 online mode.
Sir-Links-a-Lot - Create a link of 5+ formations in battle
Skilled Strategist - Complete all Battle Puzzles in each Campaign
Team Player - Win a battle in 2 vs. 2 online mode
Treasure Hunter - Collect all artifacts of each single player campaign
Unstoppable Army - Reach a Hero level of 10 and max out all units to level 5 in any Campaign
Young Hero - Win a battle in the Sylvan campaign

"I Am the Boss" achievements
ACHIEVEMENT - HOW TO UNLOCK
Overkill - Deal an additional 100HP of damage to the enemy Hero on the finishing blow.
Villains of Might and Magic - Win a battle using any of the playable Villain characters.