Hiya benchee

Here's a great run-down of how the Nanosuit 2 functions in MP: http://www.el33tonline.com/past/2010/8/22/gamescom_2010_crysis_2_multiplayer/
Pressing the jump button once behaves as you would expect – you jump. But if you press and hold the jump button you’ll leap much further into the air than normal, allowing you to clear obstacles with ease and make your way to the top of a structure or building in double-quick time. Also, if you jump towards a ledge and don’t quite make it, you’ll automatically grab onto the ledge and pull yourself up in one motion.
Running at enormous speed is also easily managed by clicking in a stick. Cloaking (going invisible for a time) is achieved with one shoulder button, while armour is activated with the other shoulder button.
Combining all of these powers into a single sequence of actions, and doing it all successfully, is extremely satisfying – perhaps you see a target from the corner of your eye in the near distance, up and over a series of roofs. In no time, you’ll be able to leap up to the same level, cloak out of visibility, sprint over to an advantageous position and unload a barrage of shotgun or machine gun fire into the target’s head, or simply melee the enemy into submission… or even sneak up on your target and snap their neck.
Very fun!