Prey is really a very good game (note : it's still free to claim on the epic store until thursday and it also include the Mooncrash semi-roguelike DLC in that free base game) .
I had some odd experience with it before getting completely hooked on it.
At first the interactive prologue reminded me so strongly of the Half Life similarly interactive start that i was rather delighted as it promised some nicely immersive experience.
But quickly (once the prologue and its surprising twist quickstart the actual game) i started to like it much less as things seemed to devolve into some basic shooter with a gun that was so weak that it was near useless against anything that is not a basic mimic.
Making you understand that you should spend most of your time running away or stealth around, but unfrotunately it seems the stealth mechanics may not be very solid, as often i was spotted despite being behind walls by enemies that shouldn't have been able to see me (yeah, despite crouching and moving slowly all the time and having the stealth 1st skill allowing crouch walk hiding).
And much more annoying those maintenance vents, some of them are simply bugged : it seems there's a bad collision detection that block you from moving through the bugged entrance/exit, i found for those bugged parts i must approach as close as possible (just before the game automatically try to make you move your head down) and small jump toward them. Fortunately most of the vent entrance works correctly, but for the couple of ones that are super bugged, try the "be very close then mini jump inside of them"
So for a while i was wondering if that was going to the same "not really good" game for hours as i felt it was (though the Gloo gun is fantastic), but still i continued to play as i remembered having read so many enthousiastic player reviews of that game that were hinting to what i was experiencing wasn't really going to be the whole thing.
And indeed they were right, at some point once i started to get more and more neuromods and usefull items, getting some skills from the various skill trees i finally started to get actual options instead of just running away or shoot with a pea shooter, and when i finally obtained a shotgun a big smile on my face as the thing really hurt .
Finally i felt the actual game was starting : i could make traps, i could stealth move around better (not just crouching), i could use the verticality (jump/skill power jum or use the gloo gun to build some self made ladder or even go into space
) of most of the areas to find alternative ways to avoid enemies, i could repair stuff, hack computer and enemies and etc... lots of options and things to do to deal with the opposition now .
And that without even mentionning the tons of more strange abilities you can get if you invest in the various alien skill trees (you can keep at using the human skill tree too, as depending on your choice the ending will change and depending on you using alien stuff or not, and some of the game mechanic can also be impacted (remember those protective turrets detecting aliens and saving your sorry ass sometime ? imagine what happens if there's too much alien dna in you
).
It's really that good, once you get out of the time between the end of the prologue and when you finally get access to more items and neuromods the game will start to shine and click with the player completely.
A tip : ammo is more sparce than you would think and that shotgun is so good you want to shoot all the time with it
But the mineral type of material is used a lot in anything you can fabricate, including ammo, so make sure to not waste any shots as you may run out of that material to craft more when you need it the most, try to deal with most stuff by filling them with enough goo so they can't move for a few seconds and use that time to strike them with the wrench as hard as you can. At least it's ammo free.