You can follow the video guide below to complete the "Safety First" mission story and finish the mission with a Silent Assassin rating.
This will also get you the following achievements if you don't have them yet:
![HITMAN 2](/imagestore/thumbs/0002444100/2444108.jpg)
The Chameleon achievement in HITMAN 2 worth 13 pointsChange your disguise during The Final Test.![HITMAN 2](/imagestore/thumbs/0002444100/2444108.jpg)
The Silent Assassin achievement in HITMAN 2 worth 15 pointsComplete The Final Test unspotted. Kill only Jasper Knight, ensuring his body is not found.