trnasformers revenge of the fallen part 3

act 3 level 1 : the devastator
this is the hardest act and level, so prepare yourself. now you control optimus prime back in shanghai. first, follow the way, destroy 3 decepticons army. then go ahead, you'll meet devastator. you can't fight him here, so run. if you get sucked, press the appearing buttons to free yourself. follow the way, and then there will be a park which there were so many deceptions here. when you're done, a short duration movie will show you that bumblebee was defeated by starscream. then turn left, you'll meet devastator again, wait until the NEST team send you a canister. push the canister, let devastator sucked it, then turn right at the moment he stop sucking. next, climb up the building by press x button repeatedly, evade devastator's swinging arm, shoot his head until appears an x mark on his right arm. press x button on that spot, then press the appearing buttons to destroy his right eye. after that, he will throw you to the bridge, first, lure him closer by shooting his head, then hide behind a pillar when he use his missile to attack you. after his missile hit the pillar, press the triangle button on the pillar to push it and hit devastator's right arm. do the same thing to the next pillar and hit his left arm. next, shoot his head again until his hand hi the ground and had a x mark like in the top of the building. press x there, and then the appearing button to destroy the devastator's left eye. after that, he will throw you to a construction area. wait for a moment, then NEST team will send you a canister again. this time, you must charge it with the flowing energy, in the middle of the construction area. you can use the canister as a shield from the sucked materials which make a great damage if hit you (to make it easier, destroy the decepticons army first). after you charge it, let devastator sucked it, then shoot his head. do the same with the next canister. after that, let devastator sucked the flowing energy first, finally, shoot his head.

act 3 level 2 : Bumblebee breaks free.
jetfire will hacked the security system and you must go to the hangar. first, destroy 2 decepticons appears, then use lift. next go up, and you'll see a mini game. and then, turn right, use lift, turn left, use a stone as a shield from a missile launcher decepticons, a mini game again.
(because this level is too long to be described, i only tell you the opening. the tricks is, if there was a turning way, watch out, because there may be a orb cannons or even 3 decepticons captains waiting you.

act 3 level 3 : megatron's glory
go upstairs to the narrow way, cross a bridge, (next just follow the way, destroy any autobots you see, and use lift to the hangar to face optimus prime). when you fight optimus, you must destroy his "satellite" first because it will shield and heal him. to destroy it, first, cut the 3 cables that hold a pillar. then a laser will turn around. make optimus stunned by a shield break combo (triangle, square) and he will getting hied by the laser and destroy his "satellite". do this until 3 times. now you can face opimus one by one. always perform a block after you attack because he will always counter you. except if you use a shield break then an uppercut repeatedly. when his health is become 0, press the triangle buttons on him and press the appearing buttons to finish him off.