Hitman: Blood Money

Here's an example of a Normal SA rating. Note that this method won't work on higher difficulties. If you're interested in conditions for Pro silent Assassin, they are:

No bodies found
No noise
No violence
Only accident kills for non-targets
Disguise not suspicious

However on Normal, as long as you don't kill anyone but the target and don't get spotted, you'll get Silent Assassin.

You need to reach Silent Assassin(At the end of all missions you are evaluated and the game will give you a score, one of which is Silent Assassin which is the most difficult to achieve, as it requires that you complete the mission practically invisible) in 5 missions while playing on Normal difficulty

Rules

-Don't kill any enemy usually just targets, if you want to kill a common enemy you should kill him in a way that looks like an accident, such as drowning, crushed by chandeliers, etc.
- No civilian NPC was hurt by you.
-No body found.
-No witness left alive.-You haven't been caught on camera.-You left the mission with all the weapons you took for the mission

Good Luck :)