Here is the full list of all 31 Quickie: A Love Hotel Story achievements.
Complete Sara's Story.
Complete Toshiko's Story.
Gift all Victoria items.
Earn the fifth star at Quickie Love Hotel in Harajuku.
Gift all Aria items.
Gift all Mai items.
Gift all Reika items.
Earn the fifth star at Quickie Love Hotel in Shibuya.
Gift all Toshiko items.
Gift all Sara items.
Meet Victoria.
Earn the fifth star at Quickie Love Hotel in Akihabara.
Unlock Shibuya.
Gift all Satomi items.
Gift all Professor Belmont items.
Meet Toshiko.
Earn the fifth star at Quickie Love Hotel in Roppongi.
Complete Professor Belmont's Story.
Meet Aria.
Unlock Harajuku.
Complete Reika's Story.
Complete Satomi's Story.
Earn the fifth star at Quickie Love Hotel in Shinjuku.
Unlock Akihabara.
Meet Mai.
Unlock Roppongi.
Meet Sara.
Meet Professor Belmont.
Complete the Introduction!
Meet Reika.
Meet Satomi.