We've been hard at work to bring Steam Workshop support to Epicinium. The upcoming update will allow you to play on maps made with the in-game Map Editor. In the mean time, we've already seen a lot of cool maps shared on Discord -- including an entire campaign!
Campaign mode
Over the last few months, community member Zanath has made a 3-act, 18-level campaign that will be integrated into the game in the upcoming update. Each level explains a new unit or mechanic and poses a different challenge. As a preview, here is the mission briefing for the first level (Act 1, Level 1):
All challenge modes from the beta have been restored as well.