Wow this was a blast. If you polish things up you could have something really cool here. I can picture this being a perfect mechanic for a viral Roblox game. When you get into the groove it feels like Arsenal meets Doom 2016.

I think what would help the gameplay the most is minimizing any disorientation the player might have after teleporting. A wider FOV may help so that the player has an easier time finding the enemy that they planned on killing next. Moving the camera in a single frame might also be an issue. If it happens over a few frames with some motion blur and momentum, that could make the motion feel smooth and traceable to the eye. Finally, hitting enemies with hit-scan may be a better approach than a slow bullet,(at least of the main weapon) because then you'll be more certain if you got the shot so your eyes aren't surprised at the teleportation.

Very cool kill mechanics! You have to think twice before kill an enemy. Very fun !

Cool concept! I think it would feel better if you disable collision on the enemies after they die. Sometimes I would teleport and bonk against their dead body which made it awkward to move around. 

Such a cool take on the theme, the spawning system works really well, and earning scores was genuinely fun. Was that Suno AI playing in the background audio?