Thank you for taking the time to play our game and giving us some feedback.
I agree that the final space section could have been a bit harder. We tried to balance it, but there were so many parameters to play around with (The enemy spawn rate, how the score in the games affected the spaceship, etc.). Our main goal was just to create something reasonably enjoyable even for players with little experience with action games. To that end, we thought that it would be better if the game was too easy rather than too hard.
Again, thank you!