Lego Star Wars The Complete Saga 91: Hoth Battle and Escape from Echo Bse, Part 1 Free Play
If you go all the way in the back, you can change into the form of a TIE fighter and the gate will automatically open for you. When it does, you can go in and shoot a snowdrift in back to reveal the Seventh Canister.
To get to the next Canister, I swear that I had to face one of the hardest points in the game. What you got to do is bring a bomb from the other side and roll it. This is difficult, because there are pits. What you have to do is roll it, and it will go over the pit. Just make certain that you catch it and hit the wall.
Once the wall is down, go ahead and get to this next area that will require the destruction of a few AT-STs and speeder bikes. Take care of it, and blast all the barrels while you are at it. You will soon find the Eighth Canister.
You will then need to go through the second stage in the game, past the cave that requires a roller bomb to get in.
Go ahead go to the TIE fighter gate, and if you keep going down a tunnel, the Ninth Canister will be on the left.
Keep going down the tunnel, and you will get to a wide open area. There will be snowdrifts/rocks that can be shot down to get some coins at the beginning, along with the Tenth Canister.
Nothing to do now but get the Power Brick. You will have to go back up through the tunnel, use a tow cable on a rolling bomb, and drag it down past an AT-AT all the way to the wall. Go ahead and get the Brick.
Escape from Echo Base
The first thing you need to do here is use the force on all four of the panels here. You will notice that the screens form a Canister, and the Second Canister will appear when you have done all four of them.
You might want to take the Artoo door to your left, as it has an engine you can use the force on to get a lot of studs.
Keep going until you get to the area with the T-intersection. This time, you will be able to get things on the room to the left. Just go in and blow up the silvery engine things with thermal detonators. You will then be able to build some heaters which will melt some nearby skeletons. Build up the skeletons and stand on the pressure pads. The Third Canister will appear.
You will now be in the room with the sliding tiles. You might not need to build up the fans, but go ahead and build that snowmobile. You need to turn into a high jumper character, park underneath the Fourth Canister, and jump up to get it.