Batman Doom is homebrew vanilla Doom 2 mod made by Ace Team (authors of Zeno Clash) in 1999 using DeHackEd Doom editor. However Batman Doom was not fully compatible with most source ports like Boom, Legacy Doom or ZDoom at these times (I earlier played this mod on ZDoom but with many bugs). Later this mod was ported to GZDoom source port by Ozymandias81 with addition of new sounds and particle effects. Overall this total conversion of classic Doom 2 was very good, Ace Team used many tricks that was not used in vanilla Doom 2. I decided to revisit this great mod because earlier I couldn't find all secrets and second last level was bugged (scarecrow did not spawn and I could not complete the level without using noclip).
0