Sonic Generations

Sonic Generations

49 Achievements

1,000

20-25h

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Mission Accomplished!

Mission Accomplished!

Cleared all the Challenge Acts.

30

How to unlock the Mission Accomplished! achievement in Sonic Generations - Definitive Guide

Nothing much to this achievement.
You just have to beat all 90 Challenge acts in the game.

There are 9 main stages, with 10 challenges for each stage, and 5 for each sonic.

This should take you a few hours, depending on how fast you do them, and what rank you're aiming for.
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15 May 2012 10:26

2 Comments
The easiest but the most annoying.
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By Rezurrection141 on 02 Apr 2013 17:39
Focus on completing them all first, then get the S if you need it. Some of the challenges are hell.
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By FarmYardGaming1 on 05 Sep 2022 13:58
Just a heads up, you don't even need to get an S rank, just complete it with a rank. You can tell which levels you've done with the bell above that releases a music note.
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3

05 Nov 2011 17:21

4 Comments
^^^ what he said ^^^
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By abtimbad on 13 Nov 2011 17:25
Yeah, bad times :(
True Sonic fans S rank everything though ;)
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By Poison Pod on 11 Nov 2011 14:03
yeh, because i can be bothered S ranking Vector ... i'll stick with an A on that one.
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By FailedSeppuku on 14 Nov 2011 16:28
@FailedSeppuku exactly vector is soo god damn annoying
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By itchybomb on 23 Jan 2012 17:48
View all 4 comments Show less comments

Challenge Acts are various mini missions in each of the stages. Once you have completed the three stages to one era the Challenge Gates will become available, there are 10 per stage, 5 for both Sonics in each stage. The challenge acts are divided by types such as:

  • Speed
  • Technique
  • Doppelganger
  • Friends
  • Enemy
  • Item
  • Ring
  • Juggle
  • Rescue


The challenge acts aren't hard at all and you can take your time in most of them however the only notable one that could have players trouble are the Doppelganger Challenges as you have to race a double of Sonic in each stage.

Doppelganger Tips:
The Doppelgangers don't take the most ideal route and even miss jumps and get hit by enemies so as long as you play a clean run through each stage and avoid getting stuck or getting hit my enemies that may disrupt your run you should be fine. A good exploit with this event is the utilize checkpoints, for example of you are a large lead on the Doppelganger and then you mess up and they pass you, you can get yourself killed and it will start you back at your last checkpoint and the Doppelganger will be at the same position as he was when you reached the checkpoint.

Quick Reminders:

  • You are not required to obtain an S-Rank in Challenge Acts for Big Bang, so long as you complete them you are fine.
  • Skill Customization will not be applied during Challenge Acts
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Complete all 90 missions and the trophy is yours
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18 Nov 2011 19:44