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Thank you to the author for the work! I played it, and didn't notice any flaws. However, some objects should be aligned with the surface so they don't sit crookedly with a gap to the basements. The upper-level lighting is indeed a matter of taste. I changed it because it strains the eyes. I'd like to offer a suggestion. If there's an option to choose the player's color, could you also add the option to choose opponents?! And make it multiplayer. I think that would be logical, considering the map's balance.
And of course, I wish you inspiration for new maps! :)
PS. I also noticed an inconsistency in the topic description – it says 1 against 3, but in reality, it's 1 against 2.