Full Walkthrough on Hard with all Collectible Weapons and M-Com Station Locations for Bad Company 2.
If you just want to see cut up videos of JUST the Collectibles and M-Com Stations then view our Short and Sweet Guide HERE.

HEART OF DARKNESS

COLLECTIBLE #5: M2 CG – After repelling the attack you need to get a rocket launcher to destroy the PBL. The Rocket Launcher is on the small hill directly in front of you. This is the small hill that the enemies where shooting rockets at you during the attack.
COLLECTIBLE #6: SPAS-12 – The SPAS is right after repelling the attack. It’s to your left as you face the small hill with the Rocket Launcher on it. It’s sitting on some crates by the dock.
COLLECTIBLE #7: AEK-971 – This is a standard issue gun found on most enemies in this level.
M-COM STATION #1 – After riding the boat you get ambushed. There is a small dock on the water and you can see a rope bridge further down with more enemies. Behind the dock there are two paths going into the woods. Take the right path and the first M-Com Station is right there on your left in a small hut structure.
COLLECTIBLE #8: T88 S-R – This is at the top of the Mayan-style stone pyramid.
M-COM STATION #2 – This is also at the top of the Mayan-style stone pyramid. Your team points it out to you.
COLLECTIBLE #9: TOZ-194S – After you leave the lumberyard you’ll come to the last set of small buildings. The Shotgun is outside the houses on the right directly on the path to the final hill.