On the first level , when you go through the red security door destroy all of the droids then then go to a block sticking out of a wall of blocks.
Pull the block out and walk into a secret area with a small health pack & a thermal detinator.
If you can't kill Darth Maul on the last level , get on the out side of Darth Maul and the hole in the middle and kep on using the force untill he is down the hole.
We have more cheats and tips for this game here, Star Wars: Episode I: The Phantom Menace cheats
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