Well done, but brutally difficult, but I finally survived wave 2 after a dozen or so tries.  Would be nice if there was an easier round to start with and get the hang of the mechanics.

Some notes/suggestions:

• If the planks/pumpkins bins started not-empty, the player would have a chance to get used to the refilling process without having to go downstairs.
• Going up/down the ladder is super tedious and make the game seem super stressful.
• Almost every time I pushed E to ascend the stairs, I bought one of the nearby upgrades, blowing all the gems I was carrying.  Could the gem repositories be next to the ladder and the upgrades farther out?  Showing an E on the current target could help a lot too (ladder, upgrade, utility upstairs).
• It looked like I was losing when neither of the door health bars was zero.
• The gem bins seem to fill faster than i can empty them.   Do they have to have a limit?

First, the music is cool and the game looks very cute! I wasn't able to drop down to the floor beneath, rendering the game mechanics very unusable. Still, I see the effort you put into the game! The sprites are so cool and the sound effects are also juicy!

Oh wow, this is fun. Took me a while to understand how to repair and reload, and even when I understood, it was still very difficult.
But I love the difficulty, it makes it a die and retry. Well done!
Good visual too.

Hey heads up your game still requires a password to play, may want to open it up to the public