Here is the full list of all 21 Arcade Spirits achievements.
Romance Teo.
Clear Level 08.
Clear Level 07.
Clear Level 06.
Clear Level 05.
Clear Level 04.
Clear Level 03.
Clear Level 02.
Obtain Wyvern Keep.
Clear Level 01.
Obtain Zombie Meltdown.
Obtain Phrase Invaders.
Romance Naomi.
Romance Gavin.
Romance Ashley.
Romance Percy.
Romance QueenBee.
Romance Juniper.
Abandon your dreams.
Don't romance anyone.
Romance everyone.