Do the following trick during the assault on the Estheim house. Instead of taking the red circle out of the room run around the circular hallway. The soldiers that you will encounter are easy to defeat and you can gain anywhere from 120 to 200 CP per battle along with an incentive chip which you can then sell. The easiest way to perform this trick is to attack the soldiers at the window instead of turning around and going straight for the soldiers that are behind you. Keep going around the hall attacking and by the time you make it back the soldiers at the window which you killed will have respawned.
Added by: Sanzano Apr 7th 2010, ID#2612