Okay so the game is lagging and crashing because i have low vram or ram. It makes sense tho because it’s unreal engine, but for low end laptops or pcs it won’t run. And i can’t do nothing about it.

"Completely and utterly unfinished :)" - Hahaha, I feel you my friend. Happens to the best

Having a crosshair would help enourmousely and also consider changing the weapon to be hitscan instead of being bullet based. That way aiming would be more responsive.

The graphics do look bit silly and the hands cover halve the screen but it fits the game. Only the shader on the barrier that encapsulates the arena distorts everything a bit to strong to my liking

Nice little shooter even if you're saying it's unfinished. I can feel the Doom influence here. You might have bitten a bit more than you could chew, but it's still impressive to have put this together in four days. Great work :)