Except cosmetic achievements, I only have mutation achievement left. So I kind of curious: Is it give you anything good as love potion or mood potion?
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It will give you an item that will instantly trigger a mutation and can be used over and over, basicaly allowing you to generate all major mutations and unlimited number of minor mutations. You can pretty much raise all your atributes to their max values by mutating over and over. It will take you quite a lot of time though.