Deus Ex: Invisible War walkthrough

This is a collaborative walkthrough for Deus Ex: Invisible War. Please add any missing information to any section and/or correct any errors that you find.

Before You Begin: Running the Game
This guide will provide several troubleshooting steps for ''Deus Ex: Invisible War. Deus Ex: Invisible War'' was released in 2003 for PC and the original Xbox, making it likely that you, the reader, are likely playing this on the PC. As such, there are a few things that you might need to know in order to run the game in the first place. Be warned: getting Invisible War running on PC can be somewhat technical if you're having trouble. This portion of the article will be brief, so if you don't understand something, Google is your ally. This guide will hardly be comprehensive, but many, many people have had problems with the game and found solutions. Most people will have no trouble finding fixes to their specific issue with a quick Google search. If you don't find your solution in this guide, but are able to solve the problem and get the game running, please update this guide with your problem, the solution that worked for you, and any other common solutions you found while looking for a solution.

The most common issue users encounter is freezing and crashing during load screens. The game uses a separate launcher program to fetch each area, rather than launching from within the engine itself. The crashing has a few common causes
 * The game takes exception to a multi-threaded processor
 * Invisible War was originally designed before multi-core processors were popular. Typically, a multi-core processor will attempt to balance a processing load evenly across its cores.  What this means for the game is that, because the game basically has to start a separate program to load in a new level, the launcher application is initialized and run from a different core than the game is on.  There are two solutions that can be attempted to fix this:
 * Set the game and the launcher CPU affinity to 1
 * All this means is that you're telling Windows to only run the game on one core of the processor. This can be accomplished for the current play session through the Task Manager, or more permanently using a utility such as Process Lasso. You will need to make sure both programs are running on one physical core with no hyper-threading.
 * Disable CPU cores and Hyper-Threading in BIOS
 * If you are unable to set the CPU affinity for both programs (it can be somewhat difficult using Process Lasso to set the affinity for the launcher), another option is to simply turn all but one physical core off in your BIOS. Not all mother boards support this feature, but running on a single physical core with no hyper-threading will force the game and the launcher to run on the same core, eliminating this problem.  The game might flash back to the desktop when you try to load an area, but don't panic: as long as your desktop is at a low resolution, the game has not crashed, and the launcher will start the next level shortly.
 * Other processes running on the same CPU core as the game are causing problems
 * Several known culprits (as of 2016) are as follows
 * Overlay programs
 * Overlays such as Team Viewer (see below), Overwolf and software that comes with the driver for some ATI graphics cards can cause the game to crash during loading screens. You'll want to find wherever these programs live and disable or uninstall them, if possible.
 * Fraps
 * Fraps is easily the most popular stand-alone screen capture program on the market. Recording with Fraps once a level is loaded causes no issues, but the game will crash if you trigger a loading screen while it is still recording.
 * Razer Configurator
 * This program is hit-and-miss. There have been reports of problems with the Razer Configurator running in the background, but not every system will have an issue with it.  If you use Razer products, only try this step once you have exhausted all above options
 * Team Viewer
 * It is not known if Team Viewer causes any problems with Invisible War, but it is widely known to cause problems with a variety of games, and also falls under the Overlay category above. If you have tried everything you can think of, exiting Team Viewer certainly won't hurt anything.

Residential Level (Part 1)
You begin the game in your bedroom. In the southeast corner, you will find a chest that contains a basketball and a map of the Tarsus Academy's residential level. A popup tutorial will inform you that you can access the "goals and notes" section by pressing "N" by default. Above the chest you will find a shelf that contains a trophy and a pair of binoculars. Grabbing the binoculars will trigger another popup that will tell you to access your inventory using the "V" key. It will also explain how to access your quick select wheel, and how to swap items in and out of it. In the northwest corner of the room, a holo-projector will activate as soon as you approach. Dr. Leila Nassif will greet you and explain that the reason you were suddenly evacuated from the Chicago academy was because of a terrorist attack. She tells you to find the map that is in your chest (if you haven't already retrieved it) and she'll unlock your door. A distant boom will sound during the conversation, and Dr. Nassif will refuse to answer when questioned. Grab the candy bar that's on your desk and the map from the chest if you haven't already. Dr. Nassif will then instruct you to go to the recreation center to meet the other cadets from Seattle, and to check in with Billie on your way down. The door to your bedroom is now unlocked, and you can exit it to access the rest of your apartment. In the south part of the main living space, you will find the dining and kitchen area. There is Soy Food in the refrigerator. Grab it, and then exit the apartment using the door on the eastern wall.

Once in the hallway, head north. A vent will explode, killing an SSC Guard and alarming the Janitor. Once the Janitor calms down, he will talk to you outside of Billie's apartment. All he will say is that he has worked at the Seattle tarsus location for years, but "nothing usually makes it past the turrets." Denton asks him if he knows what's going on, but he only replies that SSC will be "sending help any minute."

Looking north, you will see Billie's apartment. Contact her using the intercom to the left of the door, and she will invite you in to discuss the current happenings. Billie will tell Denton that she hasn't been able to get straight answers out of Nassif either, but that she was able to get the code to the elevator. You will not need to remember these codes, as, unlike the original Deus Ex, keypads do not offer you the chance to punch in codes. You either have the code or you don't, and if you don't, most keypads can be bypassed with a multitool. Denton tells Billie that he's going to try to get some better answers out of Dr. Nassif. Billie tells him she won't be coming because she has other things to do.

Inside Billie's apartment, a locked chest will be in an entryway-style area to the east containing an EMP grenade. Interacting with it will bring up a tutorial on locks. Billie's kitchen will be to the west. She has packs of soy food in her fridge and a loaf of bread on the counter. Once you've collected these, exit her apartment and follow the hallway east and then north again. There will be a news terminal on the western wall of the hall reporting on the attack on Chicago, and a cleaner bot patrolling the northernmost portion of the hall. In this section of the hall, Klara and Leo's apartments will be on the east side, but they are inaccessible at this time. Continue to the north end of the hallway and you can access the elevator to the recreation level. It will be attended by an SSC guard who is not at all cooperative when asked what is going on.

Ending 4: The Ruined Earth
ru:Прохождение Deus Ex: Invisible War