Here is the full list of all 34 paradise of desire achievements.
I first met Steyr
I first met Gergelu
The first time I met Barranca
I first met Leske
I first met Dais
Steyr's favorability rating reached Lv.1
Steyr's favorability rating reached Lv.2
Steyr's favorability rating reached Lv.3
Gergelu's favorability reached Lv.1
Gergelu's favorability reached Lv.2
Gergelu's favorability reached Lv.3
Barranca's favorability reached Lv.1
Barranca's favorability reached Lv.2
Barranca's favorability reached Lv.3
Leske's favorability reached Lv.1
Leske's favorability reached Lv.2
Leske's favorability reached Lv.3
Dais's favorability reached Lv.1
Dais's favorability reached Lv.2
Dais's favorability reached Lv.3
Defeat the BOSS Gergelu
Defeat the BOSS Steyr
Defeat the BOSS Barranca
Defeat the BOSS Leske
Defeat the BOSS Dais
Complete End 1
Complete End 2
Complete End 3
Complete End 4
Steyr was defeated
Leske was defeated
Gergelu was defeated
Barranca was defeated
Dais was defeated