Hi. Thanks for the comment and I'm glad to hear that you like the visuals. I wasn't sure if it is a good idea but I liked that surreal look. And it somehow reminds me of how dreams sometimes look like. Therefor I wanted to go for this :-)
Yes the game is hard but imho you would get bored if it wouldn't be. I often thought about reducing the difficulty of it but decided against it. As some here already pointed it out: you can reward yourself by beating your highscore. My idea/hope is: if runs are shorter you are more into trying getting better - because the next reward is sooooo close ;-)