Use guns and swords, slam through floors and walls, throw office furniture and everything else you can get a hold of to defeat as many agents as you can. They get smarter, stronger and get armed with katanas, shotguns to phazers.

Some play tips:

* The more kills you make the better the weapons the agents will bring. Two of the better weapons are the phazer and shotgun.

* The more kills you make the more agents you have to fight at a time, max 10 agents.

* Once you hit a new level try and search for a randomly placed healing kit somewhere in the building.

* You can jump on top of enemies from above floors that will also hit them.

* Throwing a desk does more damage than throwing a garbage can.

* If your computer is slow it will automatically reduce quality. The lowest is "crap" where it will turn off the music and remove motion blur effects.