Interesting momentum mod with new abilities.
Although physics itself is slippery, everyone's getting a little uncontrollable with high speed, so it kinda spoils the impression.
Abilities also interesting enough, I like Sonic's abilities the most, that's a really cool idea to mix Thok and Drop Dash at one ability.
Fang is also fun enough, this Bounce Tail's buff is awesome.
Amy's abilities is weird, but it has good potential with her Athletics-ish tricks. That is really weird that she can't do good badnik bounce at all, Ig that's for balance, so that she couldn't OP badnik bounce with her cyclone hammer.
Metal's abilities is interesting one, I like more controllable version of boost mode, but again, it all spoils slippery controls because of physics.
Rush Thruster is also weird, quite a risky ability to make any mistake like fall to pits, spikes and so on. I can't even cancel this ability, although I think it would be very useful and make Metal more fun.
Tails and Knuckles just have good balance buffs, I can't say anything about that.
Overall, definitely interesting mod with some good ideas, but this physics isn't really good enough to play comfortably.