Rahhh! stuck again, tried about 20x, so don't say go ahead and figure it out for yourself.

I find its actually impossible, the AI has hacks or something so they have direct hits every time.

Mission hint is "use the eletromagnet to repel attacks", i do, and then he shoves shotgun shells down the throat =( Anyone got how to beat this?

This is off the top of my head so I might be telling you how to do the wrong mission here. So tell me if I am wrong and then I will go and replay the mission and then tell you.

With the worm that goes first I equipped him with the jet pack and flew to the worm beside the magnet, then (without unequipping the jet pack) select the dynamite and then press the B button to place it. Then fly back to where the worm started from for cover. Then with your next turn with the worm finish off the one you just attcked. Then with your next worm burrow your way out towards the magnet. Then with your worm that is up high fire a homing missle to the worm who I think is the highest on the map. Place the homing target between the worm and the explosive barrel.

Finish burrowing out towards the magnet with the other worm. If you have already then start attacking the worm to your left. With the worm that is still up high equip him with the jet pack and fly to the worm that is the farthest to the left on the map. Place a dynamite to his right and move away from the blast radius. But stay high up. That enemy worm should fall in to the water. Then just attack the other to enemies from your current postitions. I prefered the grenades because they are not affected from the wind so I just had to learn the power I needed. The worm up high shouldn't take any more dameage. The other worm will but remeber to hide in the tunnel you just burrowed for cover after each attack.

Wow that was long. I hope I'm not talking about the wrong mission!!!