i was looking for some crysis 2 info, and i found the following.

Quote :

After a brief introduction by EA Partners' General Manager David Demartini, Cevat YErli took the stage to discuss the inspiration behind the sequel. Building on the sandbox success of Far Cry and the original Crysis, Crysis 2 will allow players to overcome obstacles through a fluid mixture of stealth, speed, strength and shields. How you tackle each encounter will be entirely up to you and, based on the demo, it seems like you'll be able to switch back and forth fairly quickly between the different modes.

The nanosuit is one of three key areas Crytek is focused on. Cevat explains his intention is to make the use of the suit more accessible by reducing the layers of interface. This time around, for instance, you will have two basic modes, a hunting mode that emphasizes stealth and a tank mode designed for direct combat. In one you can sneak around invisibly, but in the other you can really soak up damage before going down. You can also activate a secondary mode that determines whether you want more power or greater tactical awareness.

So, for instance, you might opt for a stealth approach and also activate your tactical mode so you can spot the location of nearby enemies. If things get too rough, you can switch from tactical to power mode and use it to escape with quick running and powerful jumps. If that still doesn't get you out of trouble, you can switch your stealth mode to shield and rely on the suit's additional power mode to give you the muscle to really bash your way through any encounters. Once you've taken out enemies, you can switch from power back to tactical mode while still keeping your shield profile up and running. In this mode, you'll have greater awareness of where enemies are and be able to stand up to them in a direct fight.
This matrix, which allows for one of two styles and one of two modes, gives players four different options that they can switch to depending on the situation at hand. Upgrades which are available during the course of the game will even allow players to customize their suits for more specific types of play. It's all about adapting, engaging and surviving.

We saw a good bit of this in the demo level. It begins with the player standing high up in a damaged skyscraper, looking down at the Crynet guards on nearby roof below. Activating power and stealth modes, the player turns invisible and jumps down on the roof. Sneaking up behind an isolated guard, the player gets the option for a quick and quiet stealth kill. Pulling out a shotgun, the player takes a few shots at the other guards and quickly switches from stealth to shield mode to maximize his armor.