Ah i forgot to mention that it isnt just No collisions but......
If you make an Anti Auto gunlift hack (AAG) you can lock on through walls
You'll see the names (from the VCHOOK 5) appear bright white like they are in view when you turn the AAG On
Now you just have to shoot through the walls (or make the hack first)
I cleared Co-Op in about 5 seconds
I can also Skywalk
BIG THANKS TO
SUBSKY, G-SPOT, SOLID SNAKE, RUSS and RAINERSTOFF