If you get the biochip installed (like I did, because I'm a dumbass), your HUD is ****ed for a while until Megan's able to fix it. Including the boss fight, which is already tough as it is.
--
Xbox GT/PSN name: TatteredUniform
http://www.scuffletown.org/wp-content/uploads/2010/05/tRBE1.gif