S2Howtos

SCHG How-To Guide: Sonic the Hedgehog 2 (16-bit)
Fixing Bugs
Fix Demo Playback \| Fix a Race Condition with Pattern Load Cues \| Fix Super Sonic Bugs \| Use Correct Height When Roll Jumping \| Fix Jump Height Bug When Exiting Water \| Fix Spin Dash Code and Add Spin Dash Speeds \| Fix Screen Boundary Spin Dash Bug \| Fix Camera Y Position for Tails \| Fix Tails' respawn speeds \| Fix EHZ Deformation Bug \| Fix Bug in ARZ Boss Arrow's Platform Behavior \| Fix HTZ background scrolling mountains \| Fix OOZ Launcher Speed Up Glitch \| Fix DEZ Giant Mech collision glitch
Design Choices and Features
Remove the Air Speed Cap \| Enable/Disable Tails in Certain Levels \| Collide with Water After Being Hurt \| Retain Rings When Returning at a Star Post \| Create Insta-kill and High Jump Monitors \| Create Clone and Special Stage Monitors \| Fix scattered rings' underwater physics
Extending the Game
Port Sonic 1's Sound Driver \| Port Sonic 3k's Rings Manager \| Extend the Level Index Past $10 \| Extend Water Tables \| Expand the Music Index to Start at $00 Instead of $80 (Sonic 2 Clone Driver Version) \| Add Extra Characters
Miscellaneous
Edit Level Order with ASM‎ \| Alter Ring Requirements in Special Stages \| Speed up ring loss process