I sadly hot stuck on the pillars puzzle (after quite a bit of playtime!) For a first game this is really lovely. I got the green key immediately which was very satisfying. The puzzles in the game are pretty good, but (Esspecially for the first puzzle), I felt like you had to execute the right strategy for quite a long time in order to succeed. There was also nothing you could really do if you got stuck, maybe more hints from Vaal if the player is stuck for more then x minutes?

Few small nitpicks, its not immediately clear the E button is also required to end dialogue, which scrolls by itsself otherwise, and the music transitions is a bit jarring as is, maybe a sound effect or something else to smoothen the transitions would help?

Overall though, well done! Truly, if you want reference you can look at some of my older games, what you did here is really impressive for a first game. I had some fun, its creative, artstyle and music is coherent. Great job!