make no mistake I dont take issue with the content of the mission, I take issue with the fact you're playing EGGMAN by paul shortino as backround music the entire time and yet no Dr. Eggman/Robotnik or even Phantasm Robotnik as a final boss.
WTF SEGA? you are SEGA. you could have dang well done this if you wanted, and it would be a no brainer to have EGGMAN as an easter event boss, I mean his name has at least TWO egg references in it, plus he's fat and shaped like an egg. His giant robot from sonic 2 or maybe flying in his armada who knows? the possibility was there, and low hanging fruit.
If you're gonna play a song which gets people expecting Eggman, please, dont dissapoint in the end.