Here is the full list of all 90 Time Voyeur achievements.
SHK First Medal
SHK Second Medal
SHK third Medal
Okudaka First Medal
Okudaka Second Medal
Okudaka Third Medal
Kage First Medal
Kage Second Medal
Kage Third Medal
Champola First Medal
Champola Second Medal
Champola Third Medal
Iku First Medal
Iku Second Medal
Iku third Medal
Dekinai First Medal
Dekinai Second Medal
Dekinai Third Medal
Banana First Medal
Banana Second Medal
Banana Third Medal
OK First Medal
OK Second Medal
OK Third Medal
Fireball First Medal
Firebal Second Medal
Firebal Third Medal
Haruno First Medal
Haruno Second Medal
Haruno Third Medal
Dekoki First Medal
Dekoki Second Medal
Dekoki Third Medal
Yaru First Medal
Yaru Second Medal
Yaru Third Medal
Cherry First Medal
Cherry Second Medal
Cherry Third Medal
GK First Medal
GK Second Medal
GK Third Medal
Blossom First Medal
Blossom Second Medal
Blossom Third Medal
Kunai First Medal
Kunai Second Medal
Kunai Third Medal
DN First Medal
DN Second Medal
DN Third Medal
Melada First Medal
Melada Second Medal
Melada Third Medal
Milk First Medal
Milk Second Medal
Milk Third Medal
Bushin First Medal
Bushin Second Medal
Bushin Third Medal
Ninjato First Medal
Ninjato Second Medal
Ninjato Third Medal
Gozan First Medal
Gozan Second Medal
Gozan Third Medal
Raxa First Medal
Raxa Second Medal
Raxa Third Medal
CZ First Medal
CZ Second Medal
CZ Third Medal
Sokan First Medal
Sokan Second Medal
Sokan Third Medal
Akane First Medal
Akane Second Medal
Akane Third Medal
Wakizashi First Medal
Wakizashi Second Medal
Wakizashi Third Medal
Mitsu First Medal
Mitsu Second Medal
Mitsu Third Medal
Ryken First Medal
Ryken Second Medal
Ryken Third Medal
Myst First Medal
Myst Second Medal
Myst Third Medal