Predator: Concrete Jungle

In the museum courtyard where Borgia's lieutenants are, take out all the window snipers.

Use the free camera and moves it down until you can see the Predator from below. If you make any movement (for example, use the War Cry, Voice Mimmicry, or the attack buttons), no sound can be heard. However, if you adjust the free-camera you will hear the sounds again.

There are special poles and platforms that you can perch the Predator on. They usually show up in Tech Vision. Mostly they are horizontal poles, planks, etc. Jump on one of those and the Predator will perch on top of it, allowing you to stalk your prey or get to a hard to reach rooftop.

Near where the Predator starts, there are several enemies in an inaccessible room. One of them is the bonus target. Take him out when the chance arises.

Use any of the Borgia security guards to open all the retinal scan doors (the scanner extends, and there is no cut-scene movie). Kill the Juvenile-9 leader being held prisoner to complete this mission.

An entry gate near the shed with the Pulse Mines and Maul has several Les Serviteurs ogling some ex-porn star hookers. Terminate the Serviteur leader (icon over his head). Note that causing any moderate amount of noise or undue attention will cause the enemy to flee from the spot.

Before taking out all the pimps, terminate eight prostitutes by any means.

There is a weapon upgrade on the side of one of the final buildings (you will be able to see it but cannot reach it (forcefield) until you defeat the upgraded battle armor.

Locate and activate the three cloaked beacons. Tech view will make them easy to find.

On the track past where the Machine Men initially started off.