I liked the game. However, it has three problems:
1. No regeneration. In DOOM, regeneration occurs due to finishing off enemies or picking up first aid kits, which forces you to frantically move around the level. The same goes for infinite ammo. I just sat on one of the pillars and shot back the whole time (Someone would call this a lack of skill, I call it cunning).
2. Frankly stupid big toads. I was still on the same pillar, out of their reach. They did not try to shoot at a ballistic trajectory.
3. The hook (tongue) is essentially not necessary in the passage. If you imagine yourself as a doom guy from doom 2016, then you can do without it.
Of the smaller problems, there is the twitching of the mouse when turning, but I understand that this may not be your problem. I have a very buggy mechanic in my game, which I somehow fixed with crutches ;D
What I liked:
The design is good
The music and sounds are appropriate
The shooting is pleasant
Convenient sight
Good job!