The latest update to the demo adds three rare corrupted units that can be found after level 15. 

They are a bit hard to find and a lot stronger than regular ones, for anyone willing to take up the challenge, the first ones to submit a screenshot  of one of these units being found in the discord or this post, will get a free key of the game on launch.

There are three keys that will be given away, one for each of the corrupted units.

Will you take up the challenge and be the first to find one them?  

Here is sneakpeak of what they look like, make sure you don't miss them!

You can share the screenshot of you finding them in the map menu or while fighting them and if you defeat it, you will earn a bonus reward.

If you have any questions let me know!