Sonic 3: D. A. Garden Edition: Part 9: Sandopolis Zone (Hyper Knuckles)
Sandopolis is the last Zone that D. A. Garden Edition has an exclusive new starting route for Knuckles, just like Flying Battery, Marble Garden, and Hydrocity before it. This starting route naturally takes advantage of Knuckles gliding and climbing skills, as well as featuring walls only he can smash through. Nonetheless, he will eventually reach back into Sonic's main route in order to reach the Act 1 boss.
Once again, the only cosmetic/color palette this hack made to Sonic 3 & Knuckles is giving Sandopolis Act 1 a much redder, more fiery color.
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My Act 2 run here is just the usual with Knuckles, but I do use his abilities to try and explore the ghost pyramid more than I did with Sonic and Tails. However, compared to the original S3&K, it seems like there weren't as many Knuckles-exclusive route to find and take in Act 2.
Knuckles has the shortest campaign in S3&K. This hack playthrough is almost over already.
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Original "Hyper Knuckles" SPZ Run:
https://www.youtube.com/watch?v=mFX-d_uAoq8