The lights are on
I've read a couple of the guides on how to beat what is arguably the most difficult spec ops mission in the game. High Explosive is the second spec ops mission in the Echo set, where you have to take down 10 juggernauts using only explosive-based weapons (just to clarify). Don't bother with the guns, because you won't need them. My partner and I beat them all using only one knife. No rockets, no claymores, no C4.
Hopefully you've been interested enough to read this far, because now I'm going to explain. From the starting point, there are 3 ways you can go--left, right, or straight through a house. Right when the mission starts, get in the first house all the way to the left, either by going through the window or running around to the entrance. I'm not going to make any guarantees here, but sometimes you'll run straight into the face of a juggernaut coming down that way, in which case, you'll most likely die unless you get back in time. Don't sweat it. If you can kill him, then great, otherwise just give it another go as he won't always spawn there.
Once you're in the house, have one person stand in the doorway and the other go prone up against the wall to the right of the door (from the viewpoint of standing in the doorway, looking out). Now you wait. This requires a lot of patience as the juggernauts can take awhile to come. Once they start coming along however, they'll obviously down the guy in the doorway, but they'll move closer the whole time. Once they're literally IN YOUR FACE, start knifing as much as you can. It takes a lot of melees to kill a juggernaut, but it will happen. Guy who's prone: creep just close enough to revive your downed partner and stay out of the juggernaut's sights. If you keep repeating this, eventually the juggernauts will fall and you will be 3 stars closer to Star 69.
Guy in the door: when you knife the juggernauts, there's the chance you'll knife from too great a distance and move out of the doorway, thereby letting the juggernauts come in and wreck your defenseless buddy. Make sure you STAY IN THE DOORWAY at all costs. Even when you're downed, your body will prevent the juggernauts from getting into the house.
This is a tricky mission and a sneaky tactic, but with a good deal of patience and a little bit of practice, it's definitely possible. Good luck.