Crimson Egg Zone

When Love is Lost, all that remains is Hate.
Sonic finds himself in a strange situation hot on the
heils of Dr. Eggman, What he thought would be a routine rescuing of his friend Amy Rose soon becomes a near fatal encounter with the Changeling Queen Chrysalis. The vile queen manages to syphon the love in Sonic's heart hoping to become more powerful than before. But this proves to be a grave error. Without love in his heart, Sonic now mutates into a true nightmare known as the Hatehog. Struggling to control his inner darkness Sonic now must continuously shift between his two selves as he continues on Eggman's trail...

Tails and Sonic conclude that they will need to gather the Chaos Emerald to help reverse Sonic's predicament. Only problem is that the location of these Emeralds is now hard to pin down as there are 27 energy reading spikes across the globe, on top of that they only have time to personally investigae 7 of them whilst the trail Eggman is leaving is still warm....

CRIMSON EGG ZONE
One of the seventh locations to investigate. As if Eggman's insane experiments weren't already beyond sanity then he goes and creates an entire base dedicated to combining biology and technology into one grotesque whole. A living body of crimson rivers and bone riden pathways, living tissue make up the technological structures of this base and it has its fair share of antibodies designed to hunt down particular Hedgehog-shaped viruses and other assorted Hedgehog-shaped bacteria that try to get through....

POSSIBLE PATH MISSIONS;
Alright, we got all seven Chaos Emeralds. Now we need to figure out how to get rid of that Hatehog, this particularly facility's central hub should provide the answers and after that we go after Eggman!
Fair Sonic the Hedgehog I do not wish to disrupt your progress but lady Twilight Sparkle is in trouble, she was captured by that fowl Eggman and is being held captive to try and barter for your Chaos Emeralds. If we hurry we might be able to get around his trap and rescue Twilight without sacrificing the Emeralds.