Storm Hill Has Acid Water, Castle Eggman Enemies, And Overall More Obstacles.
Oasis Facility Is Laggy Due To It Mostly Being Filled With Enemies.
Lower Abyss Is Completely Submerged And That's It.
Blackout Fortress Is VERY Dark And Has Some Fire Traps.
Granite Canyon Has A Bunch Of Maces And More Cannonball Hazards, Along With Unused Enemies.
Factory Fire Has Instakill Lava And Just Those Dragonfly Badniks.
Grand Core Has A Collaboration Of The Most Frustrating Things From Previous Stages In This Stage.
Solar Egg Is The Same Situation As Grand Core.
I Will Not Spoil The Bonus, Challenge, CTF, Or Match Stages Though.