I know that most of you probably already  know  this but there  is a endless  supply  of red  orbs
at the start of mission 3 turn around and walk toward the camera you'll  end up at  the place that
mission 2 is fight all the monsters continue as needed. Hope it helps
 

---

Kill one man you are a murderer
kill one thousand you are a monster
kill them all and you are a god

secret mission 3 is better because they're all grouped in a smaller room. it's just down the hall from yours  :P

---

. /\.................................../\
./ \ /\___/\ . . . . . ./\___/\ / \
. |(*/\/\/\*) . . . _ (*/\/\/\*)|
. C( ____ )D(\__/)C( ____ )D
. | /* /\ *\ .(='.'=) /* /\ *\ .|
. | U __ U . (")_(") U _ . .U .|
!!!!!I'M ON BUNNY PATROL!!!!

i did not know that one. since i kick butt in that mission area im sure to get alot of orbs.

---