First, when he shoots the spider things at you kill them all! No mercy. Then when he shoots the bombs at you, stand behind them and aim and hit square to hit them back at him. After 4 bombs hit him, he will drop down and start shooting at you, then you have to hide behind a pillar (jumping over them doesn't work) so u don't die, but the spiders will come back at u. U have to hide behind a pillar and kill the spiders at the same time. Then when he decides to stop, he will again throw the bombs and u have to hit them back, 4 of them, then he will get the precursor stone and will destroy the thing that u are walking on, he will only throw 2 bombs at a time now. Hit them back at him and once he shoots more at u, hit them back. If u have enough eco to turn into dark Jak, hit the first 2 at him and then turn into dark Jak and use dark bomb and he will die. Then u will see an intermission and it shows the Baron escaping with an escape pod, but he will still have the stone. Once that is over u can leave and do whatever (I would suggest that u go to the shooting range and do the blaster rifle or vulcan fury challenge, what u do is jump [x], while in the air spin kick [circle], then shoot [R1]. That way u will get precursor orbs so u can get invulnerability because u will nd it very very much, trust me I'm stuck in the place right after the fight with the Baron in the Tomb of Mar) I hope I helped, good luck, and kick the Baron's ass!!!!!!!!!