Here is the full list of all 58 Sayaka achievements.
Kill15
Kill16
Kill14
Hit
Kill13
Kill12
Kill11
Kill10
Kill9
Kill8
Again!
Inner alley
Blue door
Koji
Kill7
Kill6
Kill5
Kill4
Kill3
Kill2
Kill1
Killing Time
Fifth Blood
Fourth Blood
Third Blood
Second Blood
First Blood
Intruder
Take your first steps
Later
Mission Accepted
Start
Hello
Fuji
Mercy
Now What?
Prepare
Kill17
Kill18
Kill19
Kill20
Kill21
Kill22
Chando
Go Home
Kazuma
To be Continued