2.3.4 Update:

Optimized most of the level details, including bugs, scenes, enemies, items, hidden locations, etc

Partially replaced the texture of the level

Ghast's model has been replaced

New Enemy VENATOR Joins

New enemy Soldier joining

Third level and boss battle

Optimization of Combat Systems

Weakening of machine guns

Automatic weapon ammunition merging

The music of E1M1 has been replaced

There are other things I can't remember clearly, but these six months of work have been really difficult. I hope you can enjoy it!