Here is the full list of all 25 Arcadia achievements.
Fancy a colour change?
Play Casual mode
Slay 1000 enemies
Score 25 000 points
Score 50 000 points
Score 75 000 points
Score 100 000 points
Score 125 000 points
Score 150 000 points
Score 175 000 points
You just got 200 000 points.
Score 25 000 points in Chaotic Mode
Score 50 000 points in Chaotic Mode
Score 75 000 points in Chaotic Mode
Score 100 000 points in Chaotic Mode
Score 125 000 points in Chaotic Mode
Score 150 000 points in Chaotic Mode
Score 200 000 points. You can't achieve this with ease.
Have a cookie!
Everyone's a winner!
Play Pivot mode
Play Time Attack mode
Play Chaotic mode
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