Sonic The Hedgehog 2 Trophy Guide

Emerald Hill
Clear the Emerald Hill Zone 1.

87.46%
Common

Fast Emerald
Beat Emerald Hill Zone 1 in under 35 seconds in single-player or co-op mode.

14.68%
Rare

Fast Chemical
Beat Chemical Plant Zone 1 in under 45 seconds.

7.12%
Very Rare

Casino
Get to the Casino Night Zone.

23.51%
Uncommon

Super Sonic
Become Super Sonic.

7.02%
Very Rare

1 Tip	Extended Super Stay in Super Sonic mode for one minute.	7.01% Very Rare
really simple.... just keep collecting rings after becoming Super Sonic.
By TABZ_420 on May 14th, 2013

1 Tip	Chaos Emerald Get one Chaos Emerald.	22.74% Uncommon
This one is actually pretty easy, collect 50 rings in a level and get to a checkpoint, when you are there a circle will appear over it, now simply jump into it and you'll get to a bonus level. Complete the bonus level target and the emerald is yours. (Saving at the beginning of the Bonus Level makes it easier, so you don't have to collect all the 50 rings again if you fail.)
By Splatter392 on September 15th, 2012

1 Tip	Chaos Master Get all the Chaos Emeralds.	7.07% Very Rare
To open the gate, you must have 50 rings at any given checkpoint. A gate will open above the checkpoint...jump in. Here's the trick, save the game as soon as you enter the gate. Save a second file each time you meet the rings requirement. I recommend that you try to have 5 rings above the 1st requirement and 10 rings at the second requirement. This isn't completely necessary, but it will make the final round a lot easier. If you screw up, just reload your saved file. You can get this trophy WITH or WITHOUT Tails. If you have Tails with you, make sure he has no more than 5 rings at any checkpoint (except the 7th chaos emerald).
By Beyondthegrave07 on January 8th, 2013

Conquering Time
Beat the game in under an hour.

4.50%
Ultra Rare

1 Tip	All Multiplayer Play all four multiplayer zones.	14.32% Rare
Just play each multiplayer stage once,
By TABZ_420 on May 14th, 2013

1 Tip	Online Racer Win 10 versus zones in online play.	5.48% Very Rare
When the race starts, just let your opponent die 3 times at the beginning, it will count as a win for you and this way you can earn 10 wins way faster. Also the guy who has to win should be Sonic because if you play with Tales this trophy glitches sometimes.
By xo-SOAD-ox on May 10th, 2013

Win
Beat the game.

8.72%
Very Rare

12 Trophies (300 Points)

Developers	Sonic Team, Sega Technical Institute, Aspect Co. Ltd.
Publisher	Sega
Release Date	November 24, 1992
Genres	Action, Platformer
Themes	Superhero, Fantasy