And here is Hoth pt 2:
Ice Planet Hoth, Echo Base
You start in a tunnel, go through it and you come into a hanger of sorts.
Hop down, blast the stormies, and go to the tunnel.
Blast all the troopers here, and then go into the tunnel and do the same.
Make a right for a secret, then go into the other tunnel.
Clear the rooms, then go into the door to the right of the shield recharger.
Use the lift in the middle of the room.