Arcadia level...
	Steam Achievements...

Collect all 20 secret relics to unlock the Arcadia level.

Achievement	How to unlock
Aeolus' Favorite	Get the Power of Winds
Arcadia	You have discovered and finished Arcadia
Better than the Developer	Get all Time Challenge achievements
Blessed by Zeus	Get the power of Telekinesis
Daughter of Zeus	Get the power of Ray Casting
The Divine Collector	Find all the hidden relics
The Kindred Spirit	Find Icarus
Time Challenge: Level 1	Level 1 finished in less than 4:45
Time Challenge: Level 2	Level 2 finished in less than 3:15
Time Challenge: Level 3	Level 3 finished in less than 8:00
Time Challenge: Level 4	Level 4 finished in less than 7:30
Time Challenge: Level 5	Level 5 finished in less than 4:45
Time Challenge: Level 6	Level 6 finished in less than 5:30
Time Challenge: Level 7	Level 7 finished in less than 5:30
Time Challenge: Level 8	Level 8 finished in less than 6:30
Time Challenge: Level 9	Level 9 finished in less than 9:00
Time Challenge: Level 10	Level 10 finished in less than 6:45
Time Challenge: Level 11	Level 11 finished in less than 5:00
Time Challenge: Level 12	Level 12 finished in less than 8:00
Time Challenge: Secret Level	Secret Level finished in less than 8:30