SPOILER WARNING: CRYSIS 2: WALKTHROUGH for SUDDEN IMPACT (Part 3)
After the Ceph attacked and sunk the submarine, Alcatraz made his way out and up to the surface of the Hudson. Trying to catch his breath he and his team were trying to and assess losses, only to be attacked by the same Ceph ship that sunk the sub. The Ceph ship fired on him and his buddies and he heard screams and yelling as they were fired upon. Alcatraz was hit and his team mates seemed to be dying all around him. Slowly he was losing consciousness when he heard heavy gunfire on the Ceph ship. Ceph gun fire cracked through the air in response ripping into the nearby pavement. Moments later a suited figure approaches and and drags him off to safety …

Mission 3: Sudden Impact Walkthrough: Part 3

This is part 3 of the Mission 3: Sudden Impact Walkthrough, if you haven’t read it yet, you should begin with part 2.

By now you have probably cleared away about 1/2 of the CELL soldiers patrolling the area. In particular be on the lookout for soldiers in the garage lower level – as you first approach the crash site the lower level of the garage would be on the west side of the crater, that is behind you if you walked straight ahead.

Take out stray soldiers who wander off alone where no one is watching, and keep in mind your fall back hiding areas in case they are needed. If you need ammo you can switch back to visor mode and look around. Although some ammo is in the lower level of the parking garage, you’ll have to sneak in and reload or take out the CELL operatives there, and their backup if you are noisy about it or get spotted.

Fall back hiding spot + roof access + good view from roof

After you’ve taken out all of the CELL operatives head for the objective marker at the bottom of the crater, you’ll see a room behind which there is an alien mess. Gould comes on the radio when you get close enough and has bad news. You get a new objective marker and a helicopter shows up, but guess what? There’s a JAW down there. Grab it and take out the helicopter. If you can’t find the JAW, get recharged where you can’t be seen and then scan with your visor all around you. Once you find it pick it up and while still cloaked walk out where you can see the helicopter, aim and shoot. Now you should be able to move up to the objective marker and pry open the elevator doors. Walk in and you will see quite a drop … time for maximum armor. So hit your [LB] and turn on the armor and walk off into the elevator shaft. You land below and Gould gets excited, and tells you to scan the hull of the ship.

Make your way through the tunnels and then up into the room where the crash site objective marker is located. You’ll be tasked with scanning the biomass. Of course, its not what you were looking for and you are given a new objective which means you need to get out of that room. You will be exiting the window in the west wall. Shortly after you walk out the game takes over and a Ceph Grunt appears, jumps you and is REJECTED. He calls out to another nearby Ceph warrior and the battle for alien tissue samples is on.

After you take out the first Ceph Grunt you will be prompted to extract alien tissue which your suit will scan and absorb. You are told to collect more alien tissue samples and you get basic quick instructions about using the Nano Catalyst (alien tissue used for upgrades) to upgrade the nanosuit – of particular interest is the fact that only one slot per module:

Y: Tactical
X: Armor
B: Power
A: Stealth

But more on upgrading the Nanosuit later. Right now get to Dr Gould to deliver tissue samples. You’ll get 100 Nano Catalyst points per grunt you take out. As you emerge from the crater toward the objective marker things have changed. It looks like there was an attack since you went underground. Start heading down the road past toward the marker and its about 90m off. As you approach the end there are 3 CELL soldiers, take them out, they don’t call for backup if you get all 3 of them quick enough. Now you might notice the objective marker is below you. Its time to get down there and see what’s what.

As you start heading through the tunnel you hear gunfire. You can wait the battle out to see who’s left, or take advantage of the confusion to sneak up behind the CELL operatives and then finish off the Ceph Grunts in the area. If you take out the Ceph at a distance keep in mind you have a limited time to collect the Nano Catalyst before it disappears.

Make your way through the different areas of the tunnel till you get to a dead end, then head off to the right into a smaller tunnel. Move forward and the suit notifies you:

Processing alien tissue, assimilating bio coding.
Assimilation complete, rewriting deep layer protocols. Standby.

As you press on around a corner you go up a set of stairs and into
Mission 4: Road Rage.