Nice, this is quite motivating, I will let you know when the updated version is ready! (might take a bit though)
And thank you for the kind words about the difficulty! I personally also enjoy how the difficulty progresses (especially being quite weak in the beginning), but then again, I made the game and therefore likely tuned the difficulty to a level that I like. Anyhow, I aim to change the mechanics a bit, with the goal to not lower the overall difficulty, but to nerf some features that feel unfair, like the excessive target tracking of the enemy projectiles. There will be other mechanics that will compensate for this loss of difficulty though, hehe.