My first sub 14. Still can be improved. Not good Wacky Worckbench, Stardust Speedway and Metallic Madness. Luckly I learn how to do double hits at the final boss.

Note to MODS: running with the Sonic CD 2011 Decompilation v1.3.0 with a Music Pack. Information is showed at the end of the video, after my game crashes