Ok so please excuse the late review, just as my game was under your radar this was unfortunately under mine as well. Now woah, this game is incredible!
It starts off with basic platforming but this is done brilliantly with tight controls and everything feeling buttery smooth. What really got me hooked though as I was playing was discovering "these people get it". It's like you know what makes metroidvanias tick and I love it (much more than just open-world platformers). Creating the memories and experiences across the map got me invested and really added to that feeling of wanting to explore and discover more secrets. You've also managed to somehow get the feeling of a grandiose scale within a week??
More good things to say... The trophies system is brilliant, as you can hopefully tell below I really enjoyed finding these quirks and hidden places. I am so thankful that I got lucky and discovered the lamp by accident because lmao you guys are evil with that one. Also, accumulating into a final one life test was a brilliant finale even if after doing 100 coins it felt like a breeze. I enjoyed collecting the coins as well but unfortunately aside from the trophy they don't serve a purpose so might be nice to have a high score per life or some other way of integrating them? Also, the camera management was consistently good, and aside from the small issue getting from room 2->3 it functioned exactly how I wished it would (I have to take notes). You also somehow manipulated the camera really smoothly for the telescopes which was an amazing surprise when I first encountered it! The jump does not get stopped by bonking your head on the ceiling which works well given these platforming sections + variable jump height. Game saves my progress after closing and reopening!
It's very hard to give much criticism because the amount you've done in a week is already ridiculous, but I'll try to give proper feedback. I think the art direction could have room to improve, whether it is introducing new colours outside of the game's comfort zone or adding a bit more visual variance between zones which already feel distinct in terms of gameplay. It may also be an intentional secret but the high-up boulder was a bit hard to visually pick out from the background, so if this should be clear to find then maybe layer some grass behind? Very small typo on the main menu spelling Throphies instead of Trophies. Also, the spikes that shoot up can kill through a dead body
Hopefully it comes across that I really like this game and thoroughly enjoyed playing it! Also, this is basically a full game so would love to see this either continued or released somewhere!