Sonic the Hedgehog 2

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Joined May 1, 2013


July 5 2013, 8:25pm, edited January 27 2021, 9:51am

Official Topic Post for discussion about Sonic the Hedgehog 2 (Genesis/Mega Drive) Sonic the Hedgehog 2 (Genesis/Mega Drive)
Created 05 Jul, 2013 20:25 by jackolantern

Sonic The Hedgehog 2 (World).md
Sonic The Hedgehog 2 (W) (REV00) [!].bin
RA Checksum: 8e2c29a1e65111fe2078359e685e7943
CRC32 Checksum: 24AB4C3A

Sonic The Hedgehog 2 (World) (Rev A).md
Sonic The Hedgehog 2 (W) (REV01) [!].bin
RA Checksum: 9feeb724052c39982d432a7851c98d3e
CRC32 Checksum: 7B905383


Joined May 1, 2013


July 6 2013, 12:15am

Not sure if achievements Funds Running Dry Funds Running Dry (25) & Ground Hog Ground Hog (10) were achieved correctly.

I've not put them in faulty achievements as I'm not too sure as the achievements were given when I wasn't expecting them.

Funds Running Dry Funds Running Dry (25) was awarded at the end of Aquatic Ruin 1. I must have collected rings at some point as I can't help myself and didn't realise this achievement was there. I had a look at the achievement in the editor and (at a guess as I can't see any notes) Would putting a PauseIf next to requirement 4 so it doesn't keep going back to 0 if you get hit. Also adding a resetif when you start the next stage as to stop the game awarding any achievement if a ring is collected.

Again same thing with Ground Hog Ground Hog (10) would the pauseif work better and have the resetif added to reset if the stage changes.

Hopefully you understand and I've got the pauseif / resetif understanding correct also or will an achievement be awarded even in a paused state?

Joined Jun 9, 2013

July 6 2013, 2:05am

I remember these ones worked correctly for me,but I think you still could've got right and maybe they could unlock even if you not fulfill all of the requirements.

Joined Jul 14, 2013

July 24 2013, 3:21pm

Funds Running Dry Funds Running Dry (25)
This unlocked for me at the end of Aquatic Ruin Zone Act 1 yesterday evening, even though I had collected rings. I got hit right before the end of the stage, so I crossed the finish with zero rings, was surprised to see it pop up.

Joined Jul 14, 2013

July 25 2013, 12:45am

Chemical Madness Chemical Madness (5)
Hold Your Breath Hold Your Breath (5)
Gamble! Gamble! Gamble! Gamble! Gamble! Gamble! (5)
These three achievements unlock on their own if you wait at the title screen.


Joined Oct 3, 2012

July 26 2013, 9:40pm

Good points cirellio and Jacko, apologies for the delay - I'm looking into these now. For some reason these addresses are completely off :(


Joined Oct 3, 2012

July 26 2013, 11:55pm

Hey Cirello and Jacko - the ones triggering during the attract mode/demo sequence should be fixed, and the Dry as a Stone achievement has much tighter regulation on it now! You have to be in the previous level to it (Chemical Zone, Act 2), then arrive in the 2nd Act of Aquatic Ruin without your ring counter increasing. This should sort out any issues properly! Thanks again for posting these bugs :)

Joined Jul 14, 2013

February 7 2014, 7:38pm

An achievement idea - Listen to the mysterious unused track in the sound test.

Joined Jan 2, 2014

February 11 2014, 2:37pm

Oh you are actually referring to the track for Hidden Palace zone which was removed from the final version :)

Back in the day I thought there was a way of unlocking said level and I tried EVERYTHING :P

Joined Jul 14, 2013

February 11 2014, 2:39pm

haha, me too :)

Joined Jan 2, 2014

February 11 2014, 3:19pm

Thats how we got good at those perfect ring bonus cheevs isnt it? :p


Joined Feb 3, 2014

February 26 2014, 3:25pm

Really could use a speed run achievement for beating the first level between 25-30 seconds, world record is 23 iirc.

Joined Feb 10, 2015

February 23 2015, 11:51pm, edited February 24 2015, 4:58am

I figure it'll get seen here, actually. Did Ringless Aquatic Ruin Zone Act 1, didn't get the achievement. Used Level Select to get up there ('cause let's be honest, who wants to run through four stages just to take another crack at it?) and Sonic Only.

Any specific thing that needs doing to get the achievement? Doing it with Tails tagging along is friggin' impossible. He intentionally sabotages the attempt.

EDIT: Tried it Sonic Only, without level select. Also didn't activate it.

DOUBLE EDIT: Finally did it with Tails in tow, without the level select. STILL didn't get the achievement. Can we mark that one broken?

Joined Jul 28, 2014

March 6 2015, 7:27am

Here's an explanation on how Dry as a Stone works. It records a level hit in Chemical Plant Zone Act 2, then if you get a ring, it drops the hit. It requires you to reach Aquatic Ruin Zone Act 2 to complete the achievement.

The achievement was broken, but not the reason you thought. Until I fixed it, you could go level select into Chemical Plant Zone II, reset to the title screen, level select into Aquatic Ruin Zone II, and it would trip. Now it resets the hit if you go to the Level Select again.

Joined Mar 7, 2016

April 26 2016, 2:42am, edited April 28 2016, 1:33am

Hey I got an idea for an achievement (I think it maybe be there already). Collect 100 or 200 Rings
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