Here is the full list of all 42 Warhammer: Battle March achievements worth 1,000 gamerscore.
You have won a 2v2 multiplayer battle
You have successfully completed the first chapter of the Orc campaign
You have completed the Empire campaign
You have successfully completed the second chapter of the Empire campaign
You have successfully completed the first chapter of the Empire campaign
Finish any campaign with all heroes at lvl 40
Complete an entire campaign with the advanced controller scheme
You have completed the Chaos campaign
You have successfully completed the second chapter of the Chaos campaign
You have fully healed a squad in a refill camp
You have entered a battle with at least one mounted hero in your army
You have successfully completed the first chapter of the Chaos campaign
You have sold a non-expendable artefact to the alchemist
One of your campaign Heroes has reached the 15th level
You have killed every single enemy model on a campaign map
You have won a duel in a campaign mission
You have refilled every squad in your army during a campaign
Play 100 multiplayer games
You have won 10 multiplayer battles in the escort the flag mode
You have won 10 multiplayer battles in staged arena mode
Kill 100 heroes in multiplayer games
You have killed at least 3 enemy models with a single hero spell
You have won a duel in a multiplayer battle
You have won 10 Siege multiplayer battles
You have won 10 multiplayer battles in a row
You have won at least one multiplayer battle against each race
You have won at least one multiplayer battle with each race
You have won 5 multiplayer battles in a row
You have won a siege battle without siege weapons
You have won a multiplayer battle with mercenary units only
You have won a multiplayer battle with only Heroes
You have won 3 multiplayer battles in a row
You have won a normal multiplayer battle while spending only 75% of your available money
During a siege, you have killed an enemy artillery based on a tower
We all appreciate the patience you showed by watching the whole credits video. Thanks. :)
You have purchased an upgrade for a campaign regiment
You have successfully completed the tutorial
Successfully complete the second chapter of the Orc campaign
Complete the Orc campaign
Complete all optional missions in all campaigns
Complete Chaos campaign twice. Once with Khorne and once with Nurgle
Complete all campaigns on hard difficulty