How Do I Make A Dash&Attack Move For My Top-DownRPG 2D?

I Made This RPG Kinda Game And Unfortunately I Can Make Any Attack Movement. I Want Kind Of Like A Dash Attack That Kills These Slimes. At the moment the slimes just reduce your health on collision and you die if it reaches zero. Also I Have A Crosshair That Is Restricted and cant go far from the player, and I want To Dash&Attack In The Direction Of My Crosshair. I Want To Be Able To Kill Them And Also Detect That I Have Killed The Specific Slime Because I Want The Slime As An Item In Future. Here Is My Movement Code:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class PlayerController : MonoBehaviour
 {
     public GameObject player;
     public Animator animator;
     public float movementSpeed;
     public float runSpeed;
     public int sprintDuration=150;
     int sprintRemaining=100;
     public GameObject footstepGrass;
     public GameObject footstepGrassSprint;
     public GameObject footstepPlanks;
     public GameObject footstepPlanksSprint;
     public GameObject footstepCave;
     public GameObject footstepCaveSprint;
     public GameObject caveParticles;
     public GameObject groundMaterial;
     public Rigidbody2D rb;
     Vector3 movement;
     Vector3 aim;
     bool isAiming;
     bool endofAiming;
     bool isSprinting;
     
     void Update() 
     {
         ProcessInputs();
         Animate();
         Move();
         Footsteps();
     }
     
     private void ProcessInputs()
     {
         movement = new Vector3(Input.GetAxis("MoveHorizontal"), Input.GetAxis("MoveVertical"), 0.0f);
 
         if(movement.magnitude > 1.0f)
         {
             movement.Normalize();
         }
        
     }
 
     private void Footsteps()
     {   
 
         if(Input.GetAxis("MoveHorizontal") != 0 && !isSprinting && groundMaterial.tag == "Grass")
         {
             footstepGrass.SetActive(true);
         }
         else if(Input.GetAxis("MoveVertical") != 0 && !isSprinting && groundMaterial.tag == "Grass")
         {
             footstepGrass.SetActive(true);
         }
         else if(Input.GetAxis("MoveHorizontal") != 0 && isSprinting && groundMaterial.tag == "Grass")
         {
             footstepGrassSprint.SetActive(true);
         }
          else if(Input.GetAxis("MoveVertical") != 0 && isSprinting && groundMaterial.tag == "Grass")
         {
             footstepGrassSprint.SetActive(true);
         }
         else
         {
             footstepGrass.SetActive(false);
             footstepGrassSprint.SetActive(false);
         }
 
         if(Input.GetAxis("MoveHorizontal") != 0 && !isSprinting && groundMaterial.tag == "Planks")
         {
             footstepPlanks.SetActive(true);
         }
         else if(Input.GetAxis("MoveVertical") != 0 && !isSprinting && groundMaterial.tag == "Planks")
         {
             footstepPlanks.SetActive(true);
         }
         else if(Input.GetAxis("MoveHorizontal") != 0 && isSprinting && groundMaterial.tag == "Planks")
         {
             footstepPlanksSprint.SetActive(true);
         }
          else if(Input.GetAxis("MoveVertical") != 0 && isSprinting && groundMaterial.tag == "Planks")
         {
             footstepPlanksSprint.SetActive(true);
         }
         else
         {
             footstepPlanksSprint.SetActive(false);
             footstepPlanks.SetActive(false);
         }
 
         if(Input.GetAxis("MoveHorizontal") != 0 && !isSprinting && groundMaterial.tag == "Cave")
         {
             footstepCave.SetActive(true);
         }
         else if(Input.GetAxis("MoveVertical") != 0 && !isSprinting && groundMaterial.tag == "Cave")
         {
             footstepCave.SetActive(true);
         }
         else if(Input.GetAxis("MoveHorizontal") != 0 && isSprinting && groundMaterial.tag == "Cave")
         {
             footstepCaveSprint.SetActive(true);
         }
          else if(Input.GetAxis("MoveVertical") != 0 && isSprinting && groundMaterial.tag == "Cave")
         {
             footstepCaveSprint.SetActive(true);
         }
         else
         {
             footstepCaveSprint.SetActive(false);
             footstepCave.SetActive(false);
         }
     }
     
     private void Move()
     {
         //transform.position = transform.position + movement * Time.deltaTime * movementSpeed;
         rb.velocity = new Vector2(movement.x, movement.y);
 
         if(Input.GetAxis("Sprint") != 0 && sprintRemaining > 0)
        {
            transform.position = transform.position + movement * Time.deltaTime * runSpeed;
            sprintRemaining -= 1;
            isSprinting = true;
        }
        else if(Input.GetAxis("Sprint") == 0 && sprintRemaining < sprintDuration)
        {
            sprintRemaining++;
        }
        else
        {
            isSprinting = false;
        }
     }
 
     private void Animate()
     {
             animator.SetFloat("Horizontal", movement.x);
             animator.SetFloat("Vertical", movement.y);
             animator.SetFloat("Magnitude", movement.magnitude);
     }
 }

Here is my CrossHair Script:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class CrossHair : MonoBehaviour
 {
     public GameObject crossHair;
     bool isAiming;
     bool endofAiming;
     Vector3 aim;
 
     void Awake()
     {
         Cursor.lockState = CursorLockMode.Locked;
         Cursor.visible = false;
     }
     void Update()
     {
         isAiming = Input.GetButton("Fire1");
         endofAiming = Input.GetButtonUp("Fire1");
         Vector3 mouseMovement = new Vector3(Input.GetAxis("Mouse X"), Input.GetAxis("Mouse Y"), 0.0f);
         aim = aim + mouseMovement;
         if(aim.magnitude > 1f)
         {
             aim.Normalize();
         }
         Aim();
     }
 
     private void Aim()
     {
         Vector2 shootingDirection = new Vector2(aim.x, aim.y);
 
         if(aim.magnitude > 0.0f)
         {
             crossHair.transform.localPosition = aim * 0.3f;
             
         }
     }  
 }
 

PS:- Im Using Three Prefabs For The Slime With Each Different Color. The Slimes Spawn Randomly On The Map. Help Would Be Appreciated.