How do you beat chapter 8 of Resident Evil darkside chronicals

You are facing the mutated tyant. Every chance you get, shoot it in the head. If you have an upgraded handgun, use that because it's fast to reload. Shotguns are always good for close shots. The trick to this is that you have to get his health bar all the way down, then he will 'regenerate'. After he regenerates, someone will throw you a rocket launcher (Ada, but we don't know that.) Don't waste the rockets!!! Wear the tyrant down again until his health bar is gone. He will then run back down the platform and bend down (he is about to regenerate again). Right now, without hesitation, shoot with the rocketlauncher and hit him square and he will die. If you do not him him square or fast enough, he will rejuvenate, and you will need to go through this cycle again (until you die, or succeed.) There is plenty of rocket launcher ammo given to you to get the job done.

Now you get on the train, grab the few items in the second car; then you face the final form of G. Just shoot the tentacles to stop them, and when they are out of the way, shoot the blob in the mouth. When he gets weak enough, you will be instrcuted to shoot his tentacles and the coupler holding the train cars together. Just blast at that little square in the bottom center of the screen. Use big guns for it if you have them. Once the coupler breaks, the other train car - along with G - will go away.

You are done.