Completed without collecting any emeralds, with Sonic alone.
I got hit a few times throughout the game:
Marble Garden 1 - Spikeball was in the way and I didn't want to wait for it to move.
Launch Base 1 - Needed to lose the Lightning Shield to beat the boss faster.
Sandopolis 2 - Let a ghost hit me so I could land on top of a rock without breaking it. The extra height makes it possible to reach the platform above by bouncing off the ring boxes, avoiding a really long wait for the sand to catch up.
This was mostly recorded at 6% speed so I could perform spindashes at full power in the shortest time possible, and so that jumps could be timed perfectly to gain the most height and/or speed. On many occasions I tried each jump several times, timing it a frame or so earlier or later just to find the optimal position :)
I can't see this run being improved by much without some additional shortcuts being found and used...
There's not much else to say, except that 118631 is a very big number :P
Bisqwit: Movie published.