SEGA Genesis Classics achievements

SEGA Genesis Classics

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There are 25 SEGA Genesis Classics achievements worth 1,987 (1,000)

3,788 tracked gamers have this game, 183 have completed it (4.83%)

Achievement Details

Commitment in SEGA Mega Drive & Genesis Classics

Commitment104 (50)

Sonic The Hedgehog - Collect all 6 Chaos Emeralds

  • Unlocked by 878 tracked gamers (23% - TA Ratio = 2.07) 3,798  

Achievement Guide for Commitment

416,595 (203,220)
Achievement won on 29 May 18
TA Score for this game: 425
Posted on 29 May 18 at 20:43, Edited on 04 June 18 at 17:22
This solution has 24 positive votes and 0 negative votes. Please log in to vote.
This is for collecting all of the 6 emerald collectables in Sonic the Hedgehog.

The original and non-debug mode way

To obtain an emerald, you need to collect 50 rings or more then finish Act 1 or 2 of a zone (except Scrap Brain) and there will be a giant ring above and right of the goal post, you need to jump into that ring rather quickly after touching the goal post otherwise Sonic will run right off the screen and the result screen will start.

In the Special stage itself, you will be in a rotating maze and you will have to guide Sonic around it to get to the emerald which will be behind a barrier which will gradually come away as Sonic touches it, if you touch the emerald itself, the Special Stage will end and you have obtained one of the 6.
You can press A to jump and use the direction buttons to move Sonic when he is free falling or affect his momentum on walls.
You must avoid the GOAL sections because they will end the Special Stage and no emerald will be awarded. As a guide, follow the rings, they generally in most cases do not take you to GOALs.

The R spheres will reverse the direction of the rotating maze
The up spheres will increase the speed of the rotation
The down spheres will decrease the speed of the rotation
Red and White transparent spheres will become solid once you cross them, focus on finding these because this is the room where the emerald will be!

Act 3 has a boss at the end and there is a capsule to open so no giant ring will spawn here.

You also cannot get any Giant Rings in Scrap Brain zone, so you effectively have 10 chances to spawn a giant ring. If you fail to get an emerald on 5 or more of these occasions then you will have to start over. You must have all of the emeralds by Star Light Act 3 otherwise you cannot get them all and you must start over.

Green Hill 1 and 2
Marble 1 and 2
Spring Yard 1 and 2
Labyrinth 1 and 2
Star Light 1 and 2

Getting a Game Over does not reset progress if you have a continue, you can continue and you will still retain emerald progress. You get continues by collecting 50 rings during the Special stages themselves so collecting rings will help in the long run.

If you fail a Special stage by getting a GOAL, the next Special stage in sequence will be played next time. You will get another try at the failed Special stage when the sequence comes around again.

Also as a final helpful note, LT is your friend, it rewinds things and you can turn hitting a GOAL into another try by rewinding back to where things started to go wrong.

The achievement will pop on the result screen "Sonic got them all" after obtaining the 6th emerald.

The Debug mode way - Credit to Exu for posting this :)

I tested my theory on someone else's account and it worked.

You'll need to activate debug and level select at the same time, there's a less familiar code for that.
At the title screen, press Up Down Left Right Up B B Up Down Left Right X + Start

Select the special stage, press A to go into debug, go directly to the Chaos Emerald and press it again to collect it. During the results screen, pause and press X.

The game will unpause and go back to the title screen, so press X+Start to go back to stage select and again to enter the special stage, which is already highlighted. No need no enter any more codes.

Wait a minute, you're in the second special stage! Repeat the process until you have them all.

I made a video on it:
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