Avoid Pushing between rigidbody - unity3d

Question

I have a issue with my 2D game in unity (pokemon style), I'm using transform.position to move the gameobjects.
I have a player and enemies that follow him, all is ok. But when the enemies make a collision, they begin to push each other
I need that nobody to be pushed when the enemies and player get a collision.
I tried to use kinematic in enemies, but the player can push them.
I tried to add a big amount of mass to the player, but he can push the enemies.
I tried to detect the collision in code with OnCollision, but when I cancel the enemy movement, they don't return to move.
----UPDATE----
I need the collision but without pushing between them, here is a video to illustrate the problem
https://www.youtube.com/watch?v=VkgnV1NOxlw
Just for the record, i'm using A* pathfinding script (http://arongranberg.com/astar/) here my enemies move script.
void FixedUpdate () {
if(path == null)
return;
if(currentWayPoint >= path.vectorPath.Count)
return;
Vector3 wayPoint = path.vectorPath [currentWayPoint];
wayPoint.z = transform.position.z;
transform.position = Vector3.MoveTowards (transform.position, wayPoint, Time.deltaTime * speed);
float distance = Vector3.Distance (transform.position, wayPoint);
if(distance == 0){
currentWayPoint++;
}
}
----UPDATE----
Finally I'll get the expected result,changing the rigidbody2D.isKinematic property to true when the target was close and stop it
Here is a video https://www.youtube.com/watch?v=0Zm0idUU75s
And the enemy movement code
void FixedUpdate () {
if(path == null)
return;
if(currentWayPoint >= path.vectorPath.Count)
return;
float distanceTarget = Vector3.Distance (transform.position, target.position);
if (distanceTarget <= 1.5f) {
rigidbody2D.isKinematic = true;
return;
}else{
rigidbody2D.isKinematic = false;
}
Vector3 wayPoint = path.vectorPath [currentWayPoint];
wayPoint.z = transform.position.z;
transform.position = Vector3.MoveTowards (transform.position, wayPoint, Time.deltaTime * speed);
float distance = Vector3.Distance (transform.position, wayPoint);
if(distance == 0){
currentWayPoint++;
}
}

Answer 1

You can do this in several ways,
You can use Physics2D.IgnoreCollision
Physics2D.IgnoreCollision(someGameObject.collider2D, collider2D);
Make sure that you do the IgnoreCollision call before the collision occurs, maybe when objects instantiate.
or alternatively you can use, Layer Collision Matrix
Unity Manual provides information on using this. This simply does the collision avoidance by assigning different GameObjects to different layers. Try:
Edit->Project Settings->Physics
Or if you want it to just stop moving, You can easily do it like,
bool isCollided = false;
// when when OnCollisionEnter() is called stop moving.
//maybe write your move script like
void Move() {
if(!isCollided) {
// move logic
}
}