Here is the full list of all 16 iMemory achievements.
The base game contains 9 achievements, and there is 1 DLC pack containing 7 achievements.
Score 10
Score 30
Score 50
Score 80
Score 100
Score 150
Score 200
Score 250
Score 300
Score 400
Score 500
Score 600
Score 700
Score 800
Score 900
Score 1000