The FAQ page on the Dolphin Emulator site should help ... If you want to play retro console, arcade, or PC games, you can ...

Of that testing, some of the best performance he’s seen makes use of the Dolphin emulator running in Ubuntu ... video below for a medley of Gamecube game test runs. Some appear to run great ...

Now, if you download the latest version of the Dolphin emulator and you make an account on RetroAchievements, you will get access to achievements for a grand total of 100 GameCube games.