Location found: “The Cathedral” (C2) when you pass through the Cathedral
and out the other side, these are in the building where you knock the Hybrid
off the platform. They are in the room on the left as soon as you enter the
building.
Game Description:
The Backlash Grenade has only recently been seen on the battlefield. It is
an extremely rare munition believed to be of human construction, although
the origin of its technology is unknown. When used, the grenade projects a
spherical shield which will damage any Chimeran creature caught within it.
The shield also reflects most Chimeran weapons fire, effectively turning a
Chimeran creatures' own weapon against it.
Skull says:
This grenade is a real gem to get hold of. The shield it projects not only
hurts the Chimerans that are near it, it allows you to freely walk within it
without any damage. As for its reflective nature, it doesn’t just bounce
incoming rounds off of it at random, it actually redirects the fire directly
back to it source, effectively “bending the barrel” of the Chimeran’s
weapons just like Bugs Bunny used to do to Elmer Fudd. This grenade is the
best thing since sliced bread for the final fight while trying to destroy
the power rods in the tower. “Set it, and forget it!"
Well basically the only similarity is that it damages enemies and returns fire of the enemies which makes it a offensive weapon while Halo 3’s shield grenade is for defensive purposes.
