using UnityEngine;
using System.Collections;

public class PlayerMove: MonoBehaviour {
     
   public float speed;
   private Vector3 target;
     
   void Start () {
    target = transform.position;
   }
     
   void Update () {
    if (Input.GetMouseButton(0)) {
     target = Camera.main.ScreenToWorldPoint(Input.mousePosition);
     Vector3 moveDirection = target - transform.position;
     target.z = transform.position.z;
     float angle = Mathf.Atan2(-moveDirection.x, moveDirection.y) * Mathf.Rad2Deg;   
     transform.rotation = Quaternion.AngleAxis(angle, Vector3.forward);    
    }
    transform.position = Vector3.MoveTowards(transform.position, target, speed * Time.deltaTime);
   }      
}

using UnityEngine;
using System.Collections;

public class CameraScript : MonoBehaviour {

    public Transform target;
    public static bool targetExists = false;

    void FixedUpdate () {
     if(Input.GetKeyDown (KeyCode.Mouse0)){
      Instantiate(target, new Vector3(Camera.main.ScreenToWorldPoint(Input.mousePosition).x,
                    Camera.main.ScreenToWorldPoint(Input.mousePosition).y,
                    Camera.main.ScreenToWorldPoint(Input.mousePosition).z + 1), Quaternion.identity);
      targetExists = true;
     }
    }

using UnityEngine;
using System.Collections;

public class CameraScript : MonoBehaviour {

    public Transform target;
    public static bool targetExists = false;

    void FixedUpdate () {
     if(Input.GetKeyDown (KeyCode.Mouse0)){
      Destroy (GameObject.FindGameObjectWithTag("target"));
      Instantiate(target, new Vector3(Camera.main.ScreenToWorldPoint(Input.mousePosition).x,
                    Camera.main.ScreenToWorldPoint(Input.mousePosition).y,
                    Camera.main.ScreenToWorldPoint(Input.mousePosition).z + 1), Quaternion.identity);
      targetExists = true;
     }
    }

using UnityEngine;
using System.Collections;

public class PlayerMove : MonoBehaviour {

  public float speed;
  bool targetExists = true;
   
  void FixedUpdate () {
   if(targetExists){
    Vector3 moveDirection = GameObject.FindGameObjectWithTag("target").transform.position - transform.position;  
    float angle = Mathf.Atan2(-moveDirection.x, moveDirection.y) * Mathf.Rad2Deg;
    transform.rotation = Quaternion.AngleAxis(angle, Vector3.forward);
       transform.Translate(Vector2.up * Time.deltaTime * speed);     
   }
  }

  void OnTriggerEnter2D(Collider2D coll){
   if (coll.gameObject.tag == "target")
    targetExists = false;
  }  
}

using UnityEngine;
using System.Collections;

public class PlayerMove : MonoBehaviour {

     public float speed;
         
     void FixedUpdate () {
        transform.LookAt(GameObject.FindGameObjectWithTag("target").transform.position, Vector2.up);
        transform.Translate(Vector3.forward * Time.deltaTime * speed);
     }
}

...  
void OnTriggerEnter2D(Collider2D coll){  
    if (coll.gameObject.tag == "wall")  
     Destroy (this.gameObject);  
...

...  
void OnColliderEnter2D(Collision2D coll){  
    if (coll.gameObject.tag == "wall")  
     Destroy (this.gameObject);  
...

using UnityEngine;
using System.Collections;

public class Wall : MonoBehaviour {

  public Camera cam;

  public BoxCollider2D TopWall;
  public BoxCollider2D BottomWall;
  public BoxCollider2D LeftWall;
  public BoxCollider2D RightWall;

  public Transform Player;

  void Start () {
   TopWall.size = new Vector2(cam.ScreenToWorldPoint(new Vector3(Screen.width*2, 0, 0)).x, 0.1f);
   TopWall.center = new Vector2(0, cam.ScreenToWorldPoint (new Vector3(0, Screen.height, 0)).y);

   BottomWall.size = new Vector2(cam.ScreenToWorldPoint(new Vector3(Screen.width*2, 0, 0)).x, 0.1f);
   BottomWall.center = new Vector2(0, cam.ScreenToWorldPoint (new Vector3(0, 0, 0)).y);

   LeftWall.size = new Vector2(0.1f, cam.ScreenToWorldPoint(new Vector3(0, Screen.height*2, 0)).y);
   LeftWall.center = new Vector2(cam.ScreenToWorldPoint (new Vector3(0, 0, 0)).x, 0);

   RightWall.size = new Vector2(0.1f, cam.ScreenToWorldPoint(new Vector3(0, Screen.height*2, 0)).y);
   RightWall.center = new Vector2(cam.ScreenToWorldPoint (new Vector3(Screen.width, 0, 0)).x, 0);

   Player.position = new Vector2(cam.ScreenToWorldPoint (new Vector3(Screen.width / 2, 0, 0)).x,  
                    cam.ScreenToWorldPoint (new Vector3(0, Screen.height / 2, 0)).y);
  }
}

...
void OnTriggerEnter2D(Collider2D coll){
   if (coll.gameObject.tag == "wall")
    Destroy (this.gameObject);
...

using UnityEngine;
using System.Collections;

public class ScrollScript : MonoBehaviour {

          public float speed = 0;
          public static float original_speed = 1f;
          public static float boost_speed = 1f;

          void Update(){
             if(original_speed != boost_speed && Time.time > boostScript.currentDuration)
             {
              boost_speed = original_speed;
             }
          }

          void FixedUpdate () {
           renderer.material.mainTextureOffset = new Vector2 ((Time.time * speed * boost_speed ) % 1, 0f);
          }
}

using UnityEngine;
using System.Collections;

public class boostScript : MonoBehaviour {

          public float speed = 15f;
          float direction = -1f;
          public static int destroyNum = 0;
          public float speedBonus;
          public float timeActive;          
          private float effectDuration;          
          public static float currentDuration;

          void Start () {
           speedBonus = 20f;
           timeActive = 1f;
          }

           void Update () {
           rigidbody2D.velocity = new Vector2 ( speed * direction, rigidbody2D.velocity.y);

          }          

          void OnTriggerEnter2D(Collider2D coll){
            if (coll.gameObject.tag == "Player") {
                        destroyNum++;
                        Debug.Log("PICKED UP POWERUP");
                        ScrollScript.boost_speed = speedBonus;
                        effectDuration = timeActive;
                        currentDuration = effectDuration + Time.time;
               Destroy (this.gameObject);

           }           

           if (coll.gameObject.tag == "enemy_block") {
                        destroyNum++;
                        Destroy (this.gameObject);
           }           
          }          
}

using UnityEngine;
using System.Collections;

public class ScrollScript : MonoBehaviour {

   public float speed = 0;
   public static float original_speed = 1f;
   public static float boost_speed = 1f;
   private Material currentMaterial;
   private float offset;

   void Start(){    
    currentMaterial = renderer.material;    
   }

   void Update(){      
      if(original_speed != boost_speed && Time.time > boostScript.currentDuration)
       boost_speed = original_speed;
   }

   void FixedUpdate () {
    offset = (Time.deltaTime * speed * boost_speed ) % 1.0f;
    currentMaterial.mainTextureOffset += new Vector2 (offset, 0f);
   }
}

Это в апдейте все

if (isGrounded && (Input.GetKey (KeyCode.Space) || Input.GetKey (KeyCode.W))) {
         anim.SetBool ("Ground", false);
         holdingTime += Time.deltaTime * 10f;
         if(holdingTime > 2)
             rigidbody2D.AddForce (new Vector2 (0, 900 ));       
         else if(holdingTime > 1)
             rigidbody2D.AddForce (new Vector2 (0, 600 ));       
         else
          rigidbody2D.AddForce (new Vector2 (0, 300 ));       
        }

if (Input.GetKeyUp (KeyCode.Space) || Input.GetKeyUp (KeyCode.W))
        holdingTime = 0;