Lego Star Wars The Complete Saga 26: General Grievous
Here you will serve as both Commander Cody and Obi-Wan. I find that you need to hurt Grievous once with a lightsaber, and then he’ll leap away to a place you cannot reach. There is the First Canister on a ledge that you can leap to from that main circular area. There is a power-up there if you want to use it.
When Grievous goes to a retreat point, there are two grey barrels there. Have Cody shoot each one, and a lot of bricks will fly into the air at you. Grievous will also go back to the main combat area (for lack of a better word), and you need to hit him a few more times before he flies off.
Have Obi-Wan use the force to build a bridge out of the ruined bricks. When he crosses the bridge, there will be some bricks on a level up above him that he can use to make into some steps. If Obi-Wan takes those steps up as far as he can, he will find the Second Canister.
Keep going right, and you will find an area just below Grievous. Obi Wan can use the force to make a piece of the cliff come down. Cody can then jump onto this piece, and jump and shoot, and he will hit a barrel that will explode. Grievous will now be back at the place where he was before.
Go ahead and take Commander Cody and shoot out an area right below where Grievous was standing. You will see a Canister there.
Have Obi-Wan make a set up steps to that cliff, and he can go around to the other side and get that Third Canister. You may notice another canister, but you won’t be able to get it until Free Play when you have a high jumping character. Keep going right, and you’ll get to an area with a grapple spot where the Fourth Canister will be.
Go ahead and go back down to the area and try to take out Grievous another time. He will then jump up to another position. You then need to go up to his other retreating spot, where there is a barrel there. This barrel was not able to be moved the first time, but is free to move onto Grievous’ side now using Obi-Wan’s force levitation power.
Shoot the barrel as Commander Cody. Go down to the main combat area and defeat General Grievous with a few more lightsaber strikes.
