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