Sonic in 0m 12s 110ms by
Description
Adding the quick trapdoor, which saves 0.4s, and some improvements with the movement before the flippers, which save up to 0.15s if done quickly enough.
The sub 12 is right there, but I'm out of ideas, and without adding anything else I don't think it will be possible.
Recent runs
Level: Tidal Tempest 1
Level: Stardust Speedway 1
Level: Palmtree Panic 1