I have made a video walkthrough achieving Silent Assassin rating on professional difficulty in a semi-easy way on all levels. So it should be fairly easy to you go through the game.Silent Assassin Rating
You can got this achievement also
Shall be noted that requirements differ based on difficulty. In order to obtain Silent Assassin, you must:
• Have no covers blown. Note that you cannot get your cover blown if you're wearing the suit.
• Have no witnesses left alive.
• Never get caught on camera, except if you take the video tape before leaving the mission.
• Leave no evidence (suit and custom weapons) (Expert and Professional only).
• Kill only your targets (except with accidents).
• No bodies, unconscious or dead, may be found (except for the dead bodies of accident kills) (Expert and Professional only).
•No one must be injured apart from targets and accident kills.Video walkthrough all silent assassin on professional difficulty
I will just leave the first video visible. All other videos click the spoiler text
. Just so you dont get a wall of YouTube Playlist
:https://www.youtube.com/playlist?list=PLack4RHPjS1G0RHD2LFNn...01. Death of a Showman
02. A Vintage Year [Easy]
03. Curtains Down
05. A New Life [Easy]
06. The Murder of Crows
07. You Better Watch Out… [Easy]
08. Death on the Mississippi
09. Till Death Do Us Part [Easy]
10. A House of Cards [Easy]
11. A Dance with the Devil
12.Amendment XXV [Easy]