How do I kill De Rol Le??

[PSphan]

Can't kill it. also how do i zoom in with the rifle?

[BIG OLAF]

To zoom in, I believe you hit the LT. As for killing De Rol Le, shoot the hell out of him. Unless you don't have a gun, in which case you wait until he comes to the side of the raft, float up to him, and take some swings before he flies away.

[Shakuri]

You cant zoom with it, only go into FPS mode (L + Any direction on the D-pad).
Long range shot works well.

[Imatron_]

I think you hold a trigger button and then press up or one of the D pad buttons, and then you can use the analog to aim in first person.

If you cant get a clear shot, you can stand on the buttons to make the raft go left or right, but not foward or backwards to catch up with him. Its usually best to leave the boat centered though, so when he lines up to either side of the raft, you can pull the boat closer in time before he goes back up again.

[Jaco909]

It's L + ANY D-pad button. (But I prefer up)