Here is the full list of all 100 First Customer achievements.
You got a document No.1
You got a document No.2
You got a document No.3
You got a document No.4
You got a document No.5
You got a document No.6
You got a document No.7
You got a document No.8
You got a document No.9
You got a document No.10
You got a document No.11
You got a document No.12
You got a document No.13
Sentinel No.1
Sentinel No.2
Sentinel No.3
Sentinel No.4
Sentinel No.5
Sentinel No.6
Sentinel No.7
Sentinel No.8
Sentinel No.9
Sentinel No.10
Sentinel No.11
Sentinel No.12
Sentinel No.13
Sentinel No.14
Sentinel No.15
Sentinel No.16
Sentinel No.17
Sentinel No.18
Agent No.1 in patrol.
Agent No.2 in patrol.
Agent No.3 in patrol.
Agent No.4 in patrol.
Agent No.5 in patrol.
Agent No.6 in patrol.
Agent No.7 in patrol.
Agent No.8 in patrol.
Agent No.9 in patrol.
Agent No.10 in patrol.
Agent No.11 in patrol.
Agent No.12 in patrol.
Agent No.13 in patrol.
Agent No.14 in patrol.
Turret No.1.
Turret No.2.
Turret No.3.
Turret No.4.
Turret No.5.
Turret No.6.
Turret No.7.
Turret No.8.
Turret No.9.
Welcome to Paradise OS.
Welcome to Paradise-Brain-Projection-System.
Completed the Normal Mode[First Customer]
Completed the HARD MODE![First Customer]
You got a document No.14
You got a document No.15
You got a document No.16
You got a document No.17
You got a document No.18
You got a document No.19
You got a document No.20
You got a document No.21
You got a document No.22
You got a document No.23
You got a document No.24
You got a document No.25
You got a document No.26
Sentinel No.19
Sentinel No.20
Sentinel No.21
Sentinel No.22
Sentinel No.23
Sentinel No.24
Sentinel No.25
Sentinel No.26
Sentinel No.27
Sentinel No.28
Sentinel No.29
Sentinel No.30
Sentinel No.31
Sentinel No.32
Sentinel No.33
Sentinel No.34
Agent No.15 in patrol.
Agent No.16 in patrol.
Agent No.17 in patrol.
Agent No.18 in patrol.
Agent No.19 in patrol.
Agent No.20 in patrol.
Agent No.21 in patrol.
Agent No.22 in patrol.
Agent No.23 in patrol.
Agent No.24 in patrol.
Agent No.25 in patrol.
Agent No.26 in patrol.
[RARE]Brainwasher[Formidable enemy]