I watched your video and tested it out. The game does a good job at teaching the player without needing to spoon-feed. The ambient music and the soft tones for sound effects works really well to encourage the player. I don't see anything particularly wrong with the game. The presentation is very nice. My only critique would be the size of the text and other prompts. It's really common for early graphic designers to feel the need to fill every inch of empty space with text or a some sort of graphic. However, from a graphic design perspective, that can make things feel a bit congested/cluttered. Don't be afraid of empty space. Give things some breathing room. Like when I completed the first mission this giant box shouted at me CONGRATULATIONS NEXT and I was like "WHOA! OK! DON'T HIT ME!" A simple contrasting overlay just big enough for the text to be legible is all you need. And maybe some breathing room between "congrats" and the button.