Bronze (Bronze): Get a bronze medal.
Silver (Bronze): Get a silver medal.
Gold (Bronze): Get a gold medal.
Ghost buster (Bronze): Beat your own ghost in a Time trial level where you already have a gold medal.
Without a scratch (Bronze): Complete Platforming Hard A in less than 0:50:00 with no retries.
Easy does it (Bronze): Beat the time 1:48:00 in Time trial Easy A.
Medium C (Bronze): Beat the time 2:26:00 in Time trial Medium C.
Hard Times (Silver): Beat the time 4:25:00 in Time trial Hard B.
Time trial complete (Silver): Complete all Time Trial levels.
Platforming complete (Silver): Complete all Platforming levels.
Collector complete (Silver): Complete all Collector levels.
Nerves of steel (Gold): Complete Platforming Very Hard A without any retries.