Hey! Nice job. It still needs a lot of improvement, though. First of all, the controls. Moving your character with an RMB and then actually doing staff with LMB is counterintuitive. Also it doesn't help that the game is in Web - double clicks highlight text, send you to another tab and overall work unpredictably. Maybe you'd better stick with WASD and some action button, and then scroll between characters with one dedicated key or just 1234.
Secondly, theme execution is passable at most. You can do better, man, try something wonky and twist the theme as you please. Make it unexpected.
Colour coding for resources is neat, although sometimes you can lose your character in a similar colour (look at the first level, for example - teal player is the same colour as the tree on the left). That's just the problem of it being a prototype, I guess.
I wouldn't call it a co-op since there is really only one player needed.
The music is cool. Tell Noa they've made a great job!
Nice job for your second attempt, especially if you've learned so much.
Keep up with the good work, you definitely should participate again.