Great work! As you mentioned in your submission page, most of the judges were unable to get the game working in-browser, which was one of the requirements of the Jam. I did, however, end up downloading it and checking it out.
LOVED the graphics and overall visual aesthetic. It fit the gameplay really well, and served to make it very easy to understand where you were going and which surfaces you could interact with as you traversed the level.
The colored collectibles were a fun addition and we can see how you would interpret them as loot, and in a lot of ways they function as such. Would have loved to see them better integrated into the gameplay, rather than strewn randomly about the level. As they are, they feel more like collectibles (RE: Banjo Kazooie) that happen to boost your stats, versus traditional loot where you are actively unlocking something or equipping something that then affects gameplay.
Your idea is similar to our 5th place winner, Stellar Raid, though in their game the collectibles serve as currency which you are then able to use to purchase the "loot" in the form of upgrades. It's a subtle difference, and one that I think we could have been clearer about in announcing our theme and explaining it.
Thanks so much for participating! We hope you'll join us for our next Game Jam, and you can be sure we'll be better prepared with clearer direction on rules and the theme.