this game has huge issues, it is not fun in the state it is right now.
the swarm effect just isn't really present, higher difficulties just make enemies tankier and have more damage, the damage part is fine but then you feel like you're not dealing this much damage to enemies and you don't feel like a space marine, you feel like a regular dude.
no diversity or replayability what so ever and not that good looking of a game.
all around this is a game i would not play even for free.
if you are a real gamer, do not buy this game you will be extremely disapointed.
perks you unlock are dull and really not that useful, you spend a lot of time walking from one point to another or waiting in elevators.
long ranged attacks from the enemies destroy your armor really quickly preventing you from enjoying the melee fight, you find yourself in a postion where either you shoot and don't do anything else or fight with a melee weapon but get killed by long ranged attacks.
all of this makes the game honestly unplayable.
i would give this game "i would have enjoyed it for 3 hours max if i was 8 years old and bored because it's raining outside/20"