Messer Sandman
Stun 4 guards at once by throwing sand in their face

You have to complete the training tutorial for throwing sand in your training grounds at your Villa in Monterigionni. Once you have completed them, make sure you are unarmed in battle and hold square and release to throw sand at your opponents.To get four of them can be very tricky. I recommend an earlier city like Florence or Tuscany. Anger the guards and then run away and find more guards without letting the pursuing guards fall too far away.Your goal is to build up two or three groups of guards to increase your chances. Once you have sufficient numbers sprint a little away from them and then gather your sand and hold the square button till they get right in front of you, then release the square button. They should be in a clump from sprinting after you.It may take a couple of tries to get the timing right. Once you hit 4 of them with one blast you will receive this trophy.

If you need to see a video on how to get it look at the link below
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