I added a branch before the Place AIPawns function in the BP_Tile Event Graph to check the score, and if it’s the first tile, then don’t spawn AI.
I also manually added a back wall instead of adding another tile at the back as I preferred to have another wall and not a gate to make it clearer that it’s the beginning.
I did something similar but i separated it from the score (since that only gets updated once the player goes through the barrier for my game), and created a different variable and only now spawns AI characters if the ID of the tile is more than a given integer. I had to do this because my barrier was placed in a different position than in the lecture’s in order for the Locking/Unlocking mechanism to work
Thank you for this discussion. I love talking about Unreal 
