The Crusade of Tartarus

is a Doom 2 total conversion modification,
being developed as a community project for the GZDoom launcher.
Features many unusual features like leaning, climbing, multiple sights, fire modes and ammo types.
More details to be announced.

List of features:
https://gitgud.io/YourLocalDrugDealer/crusade-of-tartarus/-/blob/master/README.md