Sonic The Hedgehog
12 Achievements
200
60-80h
Perfect Win
You beat the game without dying.
40
How to unlock the Perfect Win achievement in Sonic The Hedgehog - Definitive Guide
To "die" in this game Sonic has to get hit while he has zero rings. As long as you have at least one ring you can get hit as many times as you like, given that you always go back and pick up this ring. Much like the advice given for the "Fast Win" achievement, saving before and after every level is a good strategy, that way if you die you can reload the level and start over. If you are an exceptionally talented Sonic the Hedgehog player you can be daring and try to combine this achievement with literally every single achievement available for this game, it's possible to nail them all in one play through.
Once again, you're going to use the save cheat. Save before every act and save 2-3 (or however many) times during the act. When you die, just reload the last game save. Make sure you do not save at a spot where your death cannot be avoided. An example would be if you saved at a spot while you were running fast and there is cliff that cannot be avoided. No matter how many times you reload the save, you will die because of how you set yourself up.