Deus Ex: Invisible War

Depending on what you do during the game you'll see one of four main endings, here's how to get them:

ApostleCorp Great Advance
Upload Aquinas Spec to JC Denton, use the machine at the base of the statue and keep JC Denton alive.

Illuminati Age of Light
Upload the Aquinas Spec to Illuminati, destroy the machine at base of statue, kill JC and Paul Denton and keep either or both Chad and Nicolette alive.

Omar Invasion
Don't upload the Aquinas Spec to anyone, destroy the machine at the base of the statue and kill the leaders of all factions.

The Templar Flood
Upload Aquinas Spec to the Templars, use the machine at the base of the statue, kill both JC and Paul Denton and keep Saman alive.

Depending on what you do during the game you'll see one of four main endings; here's how to get them:

This is a pistol with a zoom function instead of a flashlight, and also seems to be more powerful. It is a good substitute for a sniper rifle. It is inside the Nine Worlds Tavern in Trier Germany. Once inside, there is a part where you will see stairs that lead up to a closed door and down into a bar. Go up, pick the lock, and enter. You will meet the Omar here if you can find their contact. In one of the corners under some junk (you must throw it around as it hides the stash), you will find the weapon along with some other assorted items.

Unbeknownst to some, you can actually destroy those big green puddles of goo that Greasels leave behind in certain levels with Flaming Barrels or any fire weapon.

The first method involves using the Hellfire Boltcaster. First, you'll have to get it from the Nassif Greenhouse during your first visit to Old Cairo. All you have to do is aim directly for a puddle, and shoot to make it disappear. It's the only weapon that can destroy them directly, because only the Hellfire Boltcaster will show a health meter when aimed at the puddles.

As for using the flaming barrels or the Flamethrower, all you have to do is dump a dead/unconscious body on top of the puddles, and set it on fire using a flaming barrel or the Flamethrower. After a moment or two, the puddle will immediately disappear. I've tested & confirmed this with the Hellfire Boltcaster in the Antarctica Level, and with a flaming barrel & a flamethrower (plus a couple of unlucky SSC guards) in Apt. 22 of the Heron's Loft building in Lower Seattle. It may take a few shots more with the Flamethrower, but it WILL work.

This is a great help in levels like Antarctica or Germany, where Greasel puddles are scattered in certain areas in ways meant to obstruct your path.

This is an energy sword that hurts very much. Go inside JC's sanctuary. It is on top of a bookshelf when you enter the first remembered area (Maggie Chow's apartment, Hong Kong, from the first game).

At the Greasel Pit bar in Lower Seattle, you can talk to the man who owns the penthouse at Emerald Suites. Talk to him and agree to be his "chamber boy". He will give you the key. He warns you to stay in the kitchen "or the bot will take offense". However, it is just a spider bot and can be taken out easily. From there, you can hack the security terminal to turn off the laser grid, then go upstairs and hack another to open his vault. From in there, you can find all sorts of items , including an Energy Blade and the evidence the WTO wants you to find for a secondary mission.

Use explosive crates whenever you can to blow up cameras, beams, turrets and almost anything else that gets in your way.

Find the mutant and get a sample before bartering with the Omar in Seattle to get a 50% discount and a free Black Market Biocanister. It is in the basement of Club Vox in Upper Seattle.

You will need some Multitools and the Neural Interface Biomod to do this trick. In Lower Seattle, there is a bar called the Greasel Pit. Look around until you find an empty room with a Holocomm inside. A girl named Ava Johnson will start talking to you, saying that the WTO is holding her captive. She wants you to help her escape. Go to the WTO Air Terminal and to that elevator that two guards are standing by (you will have the keycode by now). Wait until the bot is not looking then move straight up the stairs. Go all the way down the walkway. To your right is a building guarded by a camera. Sneak past the camera and unlock the door with a Multitool. Go in, hack the security computer, turn off the turret, then sneak back up the walkway. To the left there is a bot guarding another building. When it is facing away from you, drop down and crouch behind the boxes or the turret. Wait for the correct moment to make a dash for the door. Once inside, deactivate the second turret, but do not leave just yet. There is a vent in the room that you can use a Multitool on. Hop in, move to the right, and get the other Multitool. Then, go back and head up the vent. You can turn on the Pilot Beacon from inside this room. Head back down the vent. There are now more guards outside looking for you. It is slightly difficult to get to the helipad from here, Try waiting until the bot is not looking and make a mad dash for it. Once you talk to Ava, she will give you free transportation for the rest of the game. It is difficult to do this, but is well worth it as you will have a lot more money to spend on other things. Note: If you are working for the WTO they will get mad at you for doing this, but will let it slide.

This glitch is to fit a npc into a bin or storage container you must first kill an enemy then pickup the body throw him into a container if you still have the baton you can do this now smack him until he fits then close the bin (Note: sometimes it wont work but it usally will) and just for fun throw a concussion mine (timed explosion) and just watch the explosion!