Shooting in 2D at mouse position, please help!!!

Hi community,
I'm new here, im working on somekind of 2d zombie defense, i 've script the player to shoot at mouse cusor, its work, but, my bullet is an arrow, i use transform.Lookat and the bullet some kind of facing to the mouse position on maincamera x,y axis, i know its some kind of weird :cry::cry::cry:, here is the picture to explan:


thanks for all the help :smile::smile:
P/S: all i want is to make the arrow look exactly at my mouse cusor, on the player x,y axis, thanks alot.

 

I think you need to check RotateAround() method.

 

thanks alot, im gonna test it. Cant you go more detail? =P i dont get it