Ahh Ultrakill... what a thrilling experience it is. truly brings me back to the era that FPS games were actually more creative, interesting but also simple to get into.
But the most importantly, Made by developers who are actually passionate about their project.

Ultrakill is basically what would happen if we combined the gameplay, look and feel of old Doom and Quake games and added the rating system from Devil May Cry.
Safe to say that the game is a masterpiece despite being currently in an early access state.

The level design is nothing of what you would expect in new games but again. it goes back to the past that the player had more freedom to move around and look for secrets + adding an element of challenge by not being linear. People who have played through the classic Doom games will be able to tell quickly what is going on.

The gameplay is really simple on that one and takes the idea of Doom and brings it to the next level. Now you ain't a god who just kills demons but rather you kill everything in your path while being fast and fluid as the movement in Ultrakill expends upon it with dashes that refill quickly, high movement speed by default.
It is important to mention that despite feeling like Doom. Playing it like Doom will be a mistake as the flow between both games is very different.

Soundtrack is probably one of the most important aspects of the game and oh boy. the OST isn't disappointing at all and really suits the game perfectly. Here is a follow example:
https://www.youtube.com/watch?v=e9EqU9y69vU

Ultrakill is basically a banger that I think that everyone should give it a go.
Solid 10/10 from me, Literally feels like that the god himself was involved in the creation of this game.