in that level, go inside the hotel (hiding the weapons), & first goto the "Receptionist" & talk to him (right click). he'll tell you where the manager is (in a restaurent, in white suit).
Now before goin to kill him, look around & see how many MEN in Suits you have to take down, First Kill thse guys & then go for the Manager.
there'll be MEN with the Sawed-OFF Shotguns, so it all depends on how you play.
***i cant give you detail, on how to kill all those men, coz there's NONE. you have to roll sideways & take the guns from the dead....blah blah blah.
after you have killed the men in theground floor, go behind the "RECEPTION desk" (get inside to take a KEYto open manager's office).
Be Very Carefull, coz lots of those Mafia Dogs come, when going up through the stairs (you can also take the Service Stair case).
Now look around by opening (right click) in third floor, to find "The W***e". (you can also do this as the first job)
After this go to the "Managers Room" to blow it, becarefull when entering his room, there's a Man who'll shoot you.
After blowing the room you've to jump over buildings to escape.
Be very very careful not to empty your bullets. coz there'll be police after you. (Hint, when you've jumped from the managers room, look around to spot the "Church", thats the place you to go)
NOTE::: Take the "Health Medicine every now & then
A Walkthrough for this game *faqs.ign.com/articles/370/370689p1.html