It was a breeze until level 5, where boss really had me stumped, at which point I realized that there is loot, and I can get it by throwing boxes (oops).
I'm really liking the loot system here. With managing risk and reward by choosing more damage or more loot strength to open crates or having more loot-quality items.
I've spent probably 6 hours grinding everything there is in the demo ^^;;
Got 100 loot-quality (5items 20 each), and 18k stardust.
Feedback: There is probably needs to be a system for dumping all these stardust, as I didn't really had to worry about item's cost-to-wear stat.
Example systems: enchanting (minecraft), gambling (diablo) or enchanting-with-chance-of-item-destruction (MMOs). Something where it is possible to dump stardust indefinitely.