Energy Barrier is a protective block that surrounds the boss portal room of the Wight Fortress. It provides light, has an animated texture, and emits particles. Whenever a player attempts to pass through it, it will bounce them back, deal 1 () damage, and play a sound. The player can only pass through the barrier by holding the Shockwave Sword in their hand when they pass, breaking all four entry ways of the barrier. This is to prevent anyone from fighting the Primordial Malevolence before having assembled the Shockwave Sword.