A cutscene introduces you to your next mission, the snowy world of Hoth. I'm going with the standard loadout of disruptor, bowcaster, and grenades.
As you start out, even though Jaden thinks he should use the Taun Tauns, you really don't need them. Its more of a hassle this early than it is any use. Advance until you can see the outline of an Imperial and let fly blaster bolts. Snipe every single snowtrooper you can see. Advance until you can see their outlines in the fog and snipe each one. When you see a group of four, and an accompanying E-Web stationary blaster cannon, snipe the one on the left first. He's the one who runs for the blaster so if you eliminate him first you should have an easy time with the other three. Keep moving after you take a shot so you can avoid their shots. Just past them is a cave entrance blocked by a pile of rocks. Jump in. Whoa, doesn't this look a little familiar? Perhaps a wampa or two around? Let's see. When the path starts to slant up, you can see the outline of one. My advice is to run as fast as you can back up to the beginning of the cave. From the rocks you can safely saber throw him into a new fur coat. Watch out though, sometimes he can get up onto one of the rocks and pummel you from his new vantage point. When he's dead, advance further into the cave. When you come to a fork, take the left. The right is a secret area.
Secret Area: This fork of the path is filled with a large shield booster, two medpacks, and a stack of trip mines.
Advance further until the cave begins to narrow. Eventually it will open up into two Taun Tauns approaching you. Snipe the two snowtroopers and throw the probe droid to scraps of metal. Jaden will comment that this is not where the Imperials entered. So turn around and follow the beacons of light. Two snowtroopers are hiding in ambush behind a few boxes. Snipe both and proceed. A few more snowtroopers are ahead. Snipe them as well. When you see an E-web cannon, notice that there is a single stormtrooper nearby. Without him, the cannon cannot operate. So shoot him, please. On the remains of the AT-AT walker the cannon is mounted on are also shields and health. Approach cautiously. When an AT-ST looms out of the fog. Take a deep breath. Return to the cannon and reposition it so that it is facing the general direction of the AT-ST. Run towards the AT-ST until it follows you. A few shots from the cannon, its over, baby. Return to the gate the AT-ST was guarding. Kill the lingering snowtroopers and hug the right wall. There should be a box you can use to jump over the gate. There is a probe droid just over the wall. Enter through the main doors. Inside waiting are three snowtroopers. Below are more snowtroopers. Take the lift down to face them. Take the lift back up. Now take the other lift. You are now within close proximity to two secret areas.
Secret Area: Use your lightsaber to cut the grating and step into the room. It contains a large shield booster.
Secret Area: Turn around, kill the snowtroopers and the officer. Inside this control room are ammo and shields. There is another room adjacent that is covered with shards of ice. Push and enter. Contains health, tripmines, and thermal detonators.
For a bit of nostalgia from the movies look up and hit the main control panel in front of the window. Ion cannon!!!
Back to the mission. There is a switch on the opposite side of the room from Ion Control which you need to hit in order to open a locked door below. Take the lift back down, and another lift down. Now the formerly locked door is open, find out what's inside. A snow filled hallway. Take the door on the right and kill the four snowtroopers within. Congrats! You found the power core. Through the next door are two more snowtroopers. Again, through the door. The right passageway takes you to a shield booster hidden behind a box. The left passage takes you to a medpack on a box. Straight ahead is the rest of the mission. Within are three snowtroopers who run you when they hear your footsteps. Take out the next two snowtroopers and head through the door. Checkpoint! Inside the room are two snowtroopers, a shield generator, medpack, and three blaster packs. Take the lift up, ready to mind trick some poor souls. Three snowtroopers are upstairs. Kill, them, and then walk...outside? Ah well. Jump over the boxes and man the cannon, something on the order of ten snowtroopers are about the bust the party. Like Jaden said, keep following the beacons. When an E-web starts to fire. Take cover fast, and check where its coming from. It oughta be the top of an AT-AT. There's another snowtrooper covering him. Behind the AT-AT are a probe droid and yet another snowtrooper. Continue following the beacons. Along the way you'll encounter yet more snowtroopers. Eventually you'll reach the front doors to Echo Base. But wait, they're closed. Ignore that for now, and enjoy the kind gifts of the game designers, a pair of shield and ammo generators. Secret area nearby.
Secret Area: From the doors, go to the left and hug the wall. Eventually it will sink down into a depression holding health and trip mines.
It took me a helluva time to find this so be happy!!! Remember that AT-AT the cannon was mounted on? It's actually a damned bunker with a forcefield set up on the other side. Cut through the power posts and drop down. Kill the two snowtroopers and then drop down where you can see the ladder. There are three more snowtroopers. After they're dead, drop down in the jagged gash you see in the skin of the walker.
Keep on walking forward. You'll end up on some kinda supply container with a medpack and a large shield booster on it. Peek over the edge and hear three snowtroopers. Kill them. Exit the cavern through the only unlocked door. Three foolhardy snowtroopers rush. Cut them down and proceed. You will hear the talking of four snowtroopers below. Mind trick one or two and finish the rest off. From the entrance to the area there are two paths, left and right. Right takes you to a secret area.
Secret Area: Three snowtroopers enter talking. Mind trick one and kill the rest. Discover a medpack and small shield booster.
Now take the left path. As you come around the corner, mind trick one or two. Hopefully they'll kill the E-web operator. Or alternatively mind trick the operator and have him blast his buddies. Exit through the door and enter... the medical ward. Mind trick as many snowtroopers as you can. Inside is a shield generator. Head towards the next door. Duck into the alcove on the right and discover a secret area.
Secret Area: Small shield booster, medpack, and detonation packs.
In the next room are two snowtroopers. The tube opposite the lift holds a medpack which you can pull to yourself. Take the lift up. Checkpoint! Above are three snowtroopers. Mind trick...ah, you can do it yourself. Rinse, wash, and repeat. When they're dead, head left from the entrance. Inside the next room are an E-web operator and a snowtrooper. Mind tricking the operator as he takes control of the E-web is one of the most effective strategies. Anyway, take the ramp down and head out the exit on the lower level. Three snowtroopers inside. Kill them and take the unblocked exit. Checkpoint! There's a large shield booster and an ammunition generator in the next room. Pass through the green door. Kill the next three snowtroopers, and return to the icy hallways. Turn the corner and find just one snowtrooper. Don't worry, three more rush from the side passages. Two snowtroopers on your side is quite helpful in this battle. Exit through door. Four snowtroopers next. Three at the next hallway. Eventually you'll reach and empty room with shield and ammo generators. Suck them dry and take the lift down. Two snowtroopers are down here but their fighting will draw the attention of a third. Mind trick another at the end of hallway to start the motion. At the end of the next L are another pair of snowtroopers. Continue ahead, mind tricking as you go until you enter a wrecked control room, girders hanging everywhere. A cutscene will ensue. Run around the computer bank and slice up the duelist. Exit room from passageway on other side. Continue onwards until you see a wampa attacking a Taun Taun. Kill the wampa. If he manages to grab you, just hit attack, I think it must be an instant kill move, but not sure. Just past it are two more ammo and shield generators. Checkpoint! (How many checkpoints is this for this one level?) You should probably be getting worried. Through the door is a big boss battle. Extremely similar to that of the battle between Kyle and Tavion. Every now and then you can sneak in a combo on the Twi'Lek. Save every time you do damage. She doesn't seem to use a lot of force powers, mostly saber skill. Eventually, she'll run after you cut her up so much she looks like a chewtoy.
More cutscenes. You find out from Luke you get promoted to Apprentice. This means you can pick and additional saber style. I picked fast b/c I want to use dualsabers. But hey, whatever goes, its up to the individual player.