No missable achievements (plus 39 unknown)
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Save a human while it's being harvested
Reach a human combo of 5
Complete a feat
Complete Techno Forest in arcade mode on any difficulty
Complete Crystal Mountain in arcade mode on any difficulty
Discover a secret level
Complete Fire Caverns in arcade mode on any difficulty
Complete Machine City in arcade mode on any difficulty
Complete Future Labs in arcade mode on any difficulty
Complete Arcade mode on Rookie difficulty
Earn 3 bronze medals in the Arena
Earn 6 silver medals in the Arena
Destroy every Secret Beacon in a single world
Succeed in 10 level end dashes in a row on any difficulty
Earn 9 gold medals in the Arena
Complete Arcade mode on Experienced difficulty
Deal a killing blow to a boss with a Sword attack
Clear a single world while succeeding in every level end dash on any difficulty
Complete a single world on Experienced difficulty without saving any humans
Clear a single world on Experienced difficulty or higher without getting hit
Reach a human combo of 50
Save all Humans and Secret Humans in a single world on Veteran difficulty
Complete 50 feats
Defeat the Beamtron on Experienced difficulty with one or more enemies still alive
Beat Machine City on Experienced difficulty in under 5:45
Complete Arcade mode on Veteran difficulty
Complete Techno Forest on Master difficulty
Complete 100 feats
Complete all achievements