Here is the full list of all 2230 Oik Memory 2 achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Open level A
Pass the level A!
Open level B
Pass the level B!
Open level C
Pass the level C!
Open level D
Pass the level D!
Open level E
Pass the level E!
Open level F
Pass the level F!
Open level G
Pass the level G!
Open level H
Pass the level H!
Open level I
Pass the level I!
Open level J
Pass the level J!
Open level K
Pass the level K!
Open level L
Pass the level L!
Open level M
Pass the level M!
Open level N
Pass the level N!
Open level O
Pass the level O!
Open level P
Pass the level P!
Open level Q
Pass the level Q!
Open level R
Pass the level R!
Open level S
Pass the level S!
Open level T
Pass the level T!
Open level U
Pass the level U!
Open level V
Pass the level V!
Open level W
Pass the level W!
Open level X
Pass the level X!
Open level Y
Pass the level Y!
Open level Z
Pass the level Z!
Open level 此
Pass the level 此!
Open level 情
Pass the level 情!
Open level 可
Pass the level 可!
Open level 待
Pass the level 待!
Open level 成
Pass the level 成!
Open level 追
Pass the level 追!
Open level 忆
Pass the level 忆!
Open level 只