Arrived at the end of a level without the KEY

Arrived at the end of a level without the ORE

Finished the FOREST world

Finished the DESERT world

Finished the AZTEC world

Finished the MEDIEVAL world

Stacked two STRUCTURE pieces

Used the CROSSING piece

Used the LEVER

Used the BUTTON

Used the STRAIGHT-CURVE piece

Used the HIT-AND-BACK piece

Triggered an AZTEC DOOR

Triggered a MEDIEVAL DOOR

Disabled an AZTEC TRAP

Disabled a MEDIEVAL TRAP

?

Catch all SKINS in the FOREST world

Catch all SKINS in the DESERT world

Catch all SKINS in the AZTEC world

Catch all SKINS in the MEDIEVAL world

?

?

Finished the game and got all the ACHIEVEMENTS