Unbeliever

UnBeliever is a three-episode, vanilla Heretic megaWAD where each episode offers a different gameplay experience and are designed to be played in any order. E1 has lots of gimmicky combat scenarios, mostly focused on Heretic's unique gadgets. E2's maps are ultra short and action- packed, built with only 100 linedefs a piece. And E3's trials require quick thinking and quicker reflexes.