I loved this game! I found it a joy to play to the end and would have happily continued playing. I got hung up on two parts which took me a few minutes to figure out though, firstly the platform next to the queen didn't stand out right away and It took me a while to figure out why I couldn't talk to the queen while standing in front of them, then it also took me a minute to realize where the song to access the catacombs was placed. However I did get a sense of satisfaction when I realized what to do, so it definitely works great as is.
But if you're open to suggestions, some kind of pointed such as the song glowing if not discovered by a certain time, or a queue as to why the interact button doesn't work with the queen at ground level could add a subtle direction as to what the player is expected to do.
I think your team did a great job, keep up the good work!