Complete Level 1.
Complete the game.
Reach a score of 500000.
Awarded for level 1-3 completion.
Complete Level 2.
Complete Level 3.
Complete Level 4.
Complete Level 5.
Awarded for completion of Level 1-1.
Complete the game and get "Excavator" rank.
Complete the game and get "Surveyor" rank.
Complete the game and get "Researcher" rank.
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