Here is the full list of all 30 Quickie: A Love Hotel Story achievements.
Gift all Victoria items.
Earn the fifth star at Quickie Love Hotel in Shibuya.
Earn the fifth star at Quickie Love Hotel in Harajuku.
Earn the fifth star at Quickie Love Hotel in Akihabara.
Meet Victoria.
Gift all Aria items.
Gift all Reika items.
Gift all Toshiko items.
Gift all Mai items.
Meet Aria.
Gift all Sara items.
Unlock Shibuya.
Earn the fifth star at Quickie Love Hotel in Roppongi.
Unlock Harajuku.
Earn the fifth star at Quickie Love Hotel in Shinjuku.
Gift all Professor Belmont items.
Gift all Satomi items.
Meet Toshiko.
Unlock Akihabara.
Meet Mai.
Unlock Roppongi.
Meet Sara.
Meet Professor Belmont.
Complete the Introduction!
Meet Reika.
Meet Satomi.
Complete Satomi's Story.
Complete Reika's Story.
Complete Professor Belmont's Story.
Complete Toshiko's Story.