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All LEGO Marvel Super Heroes 2 Guides
To make it to the Air Lock in LEGO Marvel Super Heroes 2 switch to Drax and punch the box around the emergency override switch:

To make it to the airlock use Drax to punch the control box around the emergency override switch.
Press the switch and go over to where the LEGO bits dropped down and build the lever. Go over to the lever and turn it to activate the emergency override. Go over to the lift and go down. Switch to Star-Lord and use the gravity mine. Go over to the switch and press it.