Creating a Simple Spider Swarm Animation

Hello, for part of my graduation project, I want to create a spider swarm system.

While this video demonstrates what I want, I don’t need/want the swarm to this complexity and scale. I need the spider swarms to be triggered by blueprints, spawn about 50 spiders, move and climb on walls, move a small radius distance away from the player, and disappear after a couple seconds.

Is there a simpler way to do this or explain the concepts?