I got achievement "I can dig it 3" but not 2 and 1?

not a bug to be found/

If you look closely at the types of maps in the achievements you'll notice why you can get 3 without 2 or 1

Quote:

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Originally Posted by AmyNeudaiz

If you look closely at the types of maps in the achievements you'll notice why you can get 3 without 2 or 1

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Ah, that is so odd they did it like that