I redesigned the hanger where Dr Robotnik's space jet was and added a laser cannon, used some parts here and there from different levels of Sonic CD, Chemical Plant Zone, Metropolis Zone, Sonic and Knuckles and that's how you can make a super laser cannon.
It makes me proud putting it all together I like to see that part unfinished because it's cool.
Sonic the Hedgehog 2 1992 (c)
Sonic CD 1993 (c)
Sonic & Knuckles 1994 (c)
All credit goes to Sonicteam and Sega
used with permission