Ok, now, I really want to see these 30-31 demos. I tried getting up to the top at the start, but it doesn't seem possible with the doublejump height. I'm wondering if it's just a faster version of this demo with the ramp:
i could do 30.9 with my checks, no idea how is 30.2 possible :O Map is pretty straight forward tho, most of time improvement is about last ramp and getting 1400+ ups there.