Pyrokinesis

This powerful upgrade will create explosions centered on your mouse when you and your mouse cursor aren't moving for a bit. These explosions are quite powerful.

Tips: After WSR level 8 your pyrokinesis becomes much more powerful. It will release a cross-pattern of explosions that move over a large area.
 * 1) These are very helpful for destroying traps and other stationary objects
 * 2) Use your Brain Bomb Decrypter to kill fleas so they don't disrupt your concentration and stop this from activating
 * 3) This can be used while disabled
 * 4) This is useful for safely attacking Overlords in some situations

 

The blue computers throughout the missions give you part of the code needed to unlock this. You can enter this code on the upgrade screen after Mission 40.

 

You really should figure out the code yourself since this is a bit OP at earlier levels.

 

But if you don't want the fun of figuring it out yourself...

 

It is the Konami code.