2.5d aiming

Hello! How do i turn 3d aiming into 2d aiming?
Currently if i move my mouse up, my guy aims above himself, if down, it aims below himself in 90° limitation.
How do i make my guy to be able to aim in 360°? when he aims behind himself, he should do a 180° spin.
I asked something like this on GetIgnored.unity.com and yeah, also the asset owner refused to help me. As that didnt work out, ill try here.

Code (CSharp):

1. public void HandleThirdPersonAiming()
2.     {
3.         if (ThirdPersonPhotonView.isMine) {    //If this is our instance of the game
4.             float AimAngle = PlayerCamera.transform.localRotation.x;    //Get get our current local aimangle
5.             PlayerThirdPersonAnimator.SetFloat ("AimAngle", AimAngle * 1.5f); //Set the float AimAngle in the animator on our player instance
6.             if (ThirdPersonWorldWeapon != null && WeaponIK && ThirdPersonWorldWeapon.GetComponent<ThirdPersonWeapon> ().LeftHandTransform != null) {
7.                 LeftHand.position = ThirdPersonWorldWeapon.GetComponent<ThirdPersonWeapon> ().LeftHandTransform.position;
8.                 if (ThirdPersonWorldWeapon.GetComponent<ThirdPersonWeapon> ().IgnoreLeftHandRotation == false) {
9.                     LeftHand.rotation = ThirdPersonWorldWeapon.GetComponent<ThirdPersonWeapon> ().LeftHandTransform.rotation;
10.                 }
11.             }
12.         }
13.         if (!ThirdPersonPhotonView.isMine) { //If this is a other player
14.             PlayerThirdPersonAnimator.SetFloat ("AimAngle", Mathf.Lerp (PlayerThirdPersonAnimator.GetFloat ("AimAngle"), SyncedAimangle, 0.05f)); //Lerp the aimangle so it looks smooth on our instance
15.             if (ThirdPersonWorldWeapon != null && WeaponIK && ThirdPersonWorldWeapon.GetComponent<ThirdPersonWeapon> ().LeftHandTransform != null) {
16.                 LeftHand.position = ThirdPersonWorldWeapon.GetComponent<ThirdPersonWeapon> ().LeftHandTransform.position;
17.                 if (ThirdPersonWorldWeapon.GetComponent<ThirdPersonWeapon> ().IgnoreLeftHandRotation == false) {
18.                     LeftHand.rotation = ThirdPersonWorldWeapon.GetComponent<ThirdPersonWeapon> ().LeftHandTransform.rotation;
19.                 }
20.             }
21.         }
22.     }
23.  

 

Thanks for all the help! Couldnt have done this without any of you....