Got 2712!
Really fun game. I'm a sucker for really crude, hand drawn pixel art, so this was a blast for me.
Also, I might know, what causes the faster speed bug. I had a problem in my first game, where the character moved at random speeds, because I added speed on every update, which was called based on refresh rate, or whenever my computer wanted it to, but you can use fixedUpdate or divide speed by time elapsed from last Update.