Rated your game! Here's some feedback if you're interested:
It's not super clear the first bomb was conveying information with the shapes since the angle of it makes it looks like it's part of the background. So I didn't notice and just relied on the dialog for the first two puzzles 🤷♂️
There's a conflict with how the player needs to learn what to do but also be put under pressure with doing what they learned. My suggestion would be to have the first round play out as is without the timer. But then once they solve it, then there's a new, longer sequence of shapes as well as new dialog that affects the shapes, and only now should you put in the timer. This way, the player can apply what they know under time pressure that they are under some control over.