Childern of Wrath (MAP05) [Doom & Retro FPS Mods] Attack on IO is a seven-level PWAD for Doom II, released in June 2021 by Brian “Bri” Irving. Designed for Boom-compatible source ports and built from scratch over a ten-month period, it was tested with GZDoom, PrBoom , and DSDA. Originally titled “Curse of Reverence,” the project was later reworked and released under its current name. The WAD is single-player only, features multiple difficulty settings, and is balanced for pistol starts, with con