For The Lost Mythologies players, this guide is an 100% achievement guide, which will help you to get the achievement of the game.
Open this link and then click download
Another page will open, then click download anyways.
In your steam library, right click the game > Manage > Browse local files
You may want to backup your current files as the old game is only in Chinese.
Just run the game, directly from the folder file or from steam.
Now the achievement should pop up, as easy c;