Seems a bit too easy, encountered some challenge during wave 9 when a bunch of red enemies spawned, then it got a lot easier, the boss died relatively quickly since I let him hit me for the damage bonus relic. The demo's difficulty might be on point now that I think of it, the presentation and art style might attract players that don't seek too much challenge and want a more time-killer type of game. Other than that the game seems really well polished, best of luck with the steam release!