Pyramid Scheme is the second mission in the Ultor mission Arc Featured in Saints Row 2.
Walkthrough
Go to the Saints Row District.And Get a Four-Star Ultor Notoriety by Causing as much Damage as you can.Once you've Done that,Go to Forgive and Forget to Lose The Cops.After you do that,go to the Ultor base while Ultor is distracted.get the keycard to open the doors for the labratories.Kill anybody who gets in your way.Once you have done that,Plant the Bombs in Each Labratory.After you Do That,Get in the Bear vehicle and Get out of the base before the bomb's EXPLODE!!