What DLC to buy in what order?

[LtQuixotic]

Gamers,

I'm wondering the best way to acquire this game. I have the base game and am going to try it out. Is there any DLC that is retroactively compatible with the main campaign? I would hate to start the campaign and then find out I don't have access to all the units.

Is there any of the DLC I should acquire immediately if I want the full experience?

[Kaysoky]

In the base game you get the Invasion long campaign.

With Onslaught, you get access to a mid-late game map in Invasion, which unlocks Eagle units. Onslaught also gives you the Amulet rogue-like campaign. You can start this campaign with different heroes depending on what DLCs you own.

• Filos, Ailsa, and Falirson are unlocked by default.
  
• Moira and Marcra are unlocked with Empire Aflame.
  
• Szzlag and Falirson (hunter) are unlocked with Evolution.

The Empire Aflame and Evolution DLCs are otherwise completely independent.

So if you are playing Invasion, you could consider picking up Onslaught. If you finish Invasion, and you want more, that's when you pick up the sequel (Empire Aflame) or prequel (Evolution).