Here is the full list of all 16 Cubic Figures trophies - there are 2 bronze, 3 silver, 10 gold and 1 platinum.
I tried them all!
Complete level 1 on easy difficulty
Complete level 2 on easy difficulty
Complete level 3 on easy difficulty
Complete level 4 on easy difficulty
Complete level 5 on easy difficulty
Complete level 1 on medium difficulty
Complete level 2 on medium difficulty
Complete level 3 on medium difficulty
Complete level 4 on medium difficulty
Complete level 5 on medium difficulty
Complete level 1 on hard difficulty
Complete level 2 on hard difficulty
Complete level 3 on hard difficulty
Complete level 4 on hard difficulty
Complete level 5 on hard difficulty