So l made a simple spiral on level four, and had two walls overlapping each other as there was no other way to properly enclose my turret for the maze l wanted to run, and things were going perfect.... until the enemies decided the two overlapping walls didn't exist and flew right through them to my core, skipping my second turret and the second lap around my core entirely. Please fix this horrendous bug. l don't enjoy having to do long drawn out lines from my core to the enemy spawn every level because the game is busted and l can't trust spirals.