The vikings escape being crushed by pneumatic plungers, then learn how to operate a crane.
Reach the Exit
Erik can jump to read the question mark block, which explains how to use the crane. Use it to pull up the metal block, then drop it on the metal plunger to open the door.
Go to the right and you will see an Omega Bomb up in the ceiling. Erik can climb up the leftmost pipe to get into that area and reach the Omega Bomb. To get out of the box, Erik needs to go to the left side and climb down the pipe.
To the right, there is another crane. Have Olaf raise his shield and float into the pit to the right of the crane. Then one of the other vikings can operate the crane, using the magnet on Olaf's shield to raise him up. Then move the magnet so that when you release Olaf, he will float down to the button. You will have to quickly switch to Olaf to press the button, then quickly switch back to the viking in the crane to raise Olaf back up before he falls on the laser. If you're having trouble with this, use the magnet to put Olaf on top of the yellow beam, then move the magnet so it's to the right of the button and activate the magnet. That way, Olaf can float down and press the button, the float to the right to be pulled up by the magnet.
Now have all the vikings go down below. Before using the see-saw, Erik should jump up the springs and use the Omega Bomb to kill the two machines at the top. Then Erik should go back down and jump on the right side of the see-saw. Then put Olaf on the right side of the see-saw and have Erik jump onto the left side. Olaf should jump from spring to spring until he goes past the vent on the left. Olaf should go into that vent and block the bullets from the gun monster on the left.
Meanwhile, Erik should go through a hidden hole to the right of the see-saw to get a piece of meat. Erik can also jump up the springs and go through the vent on the right to get another Omega Bomb. He should go to where Olaf is blocking the gun monster and use the Omega Bomb to kill it, then go to the left to get the giant steak.
Now have all three vikings go to the upper level. One of the vikings should go to the right and through a hidden hole to reach the tomato. Then go to the left, and have Olaf raise his shield and have one of the other vikings operate the crane to lift Olaf. Move Olaf as far left as he can go, then have Olaf raise his shield and float to the left, past the spikes. Then Olaf can go to the right and press the button to deactivate the laser. Then all three vikings can go to the left to reach the exit.