Great art and vibe! Also, really well done with the "pace" of the game - the actions, the progression within the day. But what's really lacking is a sense of progression between the days - except for some extra enemies, it doesn't feel like anything changes... And the levels you get don't feel like they matter or give you anything. But as a demo - it works great!
Also found two minor bugs: when you press upgrades you can afford by one resource but can't by the other - you still lose resources on click. And if you press "e" while you already started collecting some resource - you switch to another one, but the previous is not accessible anymore (but still look uncollected). Ad if the flag for being collected got checked, but the collection didn't happen.
And a major bug with fire - it froze my browser, and even on the exe version, the first fire took about 10 seconds to initiate.