The demo now has 3 achievements to complete: "Victory!", "Basic Training", and "Explorer". The achievement descriptions and images are below. There is also a new optional interactive tutorial, which you can find from within the main menu. This replaces the old text-based hint system. Good luck and have fun!
Pro tip: To instantly build the last built unit, right-click a village!
Victory!
Win a battle in skimish mode.
Basic Training
Complete the tutorial.
Explorer
Play all 3 demo maps at least once.