Here is the full list of all 45 Necronator: Dead Wrong achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Lose a Battle as Luavira Heartwing
Win a Battle as Luavira Heartwing
Reach Level 2 as Mirabella the Doll
Have 7 Cards in hand
Win an Elite Battle as Mirabella the Doll
Lose a Battle as Mirabella the Doll
Lose a Battle as Number 7
Win a Battle as Mirabella the Doll
Reach Level 2 as Number 7
Play 10 Cards in 10 seconds
Finish 3rd sector for the 1st time in campaign mode
Defeat Flosshilde the Huntress and her mount
Use Redraw when you have 6 cards in your hand
Finish 2nd sector for the 1st time in campaign mode
Defeat Sultana Al'Noobi in Genie Form
Upgrade a Spell Card
Upgrade a Utility Card
Finish 1st sector for the 1st time in campaign mode
Defeat Lord Balderdash and his Yeti
Upgrade a Squad Card
Win an Elite Battle as Number 7
Have 45 Units on the battlefield at the same time
Have 30 Units on the battlefield at the same time
Win a Battle in under 180 seconds
Redraw your hand
Play 5 Cards in 10 seconds
Win a Battle as Number 7
Win a Battle in under 90 seconds
Win a Battle without your Mana ever reaching 100%
Change the direction of a Signpost in Battle
Haunt a Village
Start your first Game
Win a Battle after Enemy Reinforcements have arrived
Win a Battle without Haunting any Village
Allow a Battle to last 8 minutes
Win an Elite Battle as Luavira Heartwing
Reach Level 2 as Luavira Heartwing
Reach Level 10 as Number 7
Reach Level 10 as Mirabella the Doll
Reach Level 10 as Luavira Heartwing
Haunt 100 Villages
Load a User Created Mod
Use Redraw when you have 8 cards in your hand
Have 10 Cards in hand
Use Triple Cast on a Perk Utility Card