Got it for free on Epic Games and finished the first chapter.

The perspective is weird, the guns are too similar to deliver a varied experience, explosives don't destroy surrounding objects, the visuals don't look too pleasing, the music doesn't loop seamlessly... I could go on naming flaws that wouldn't seem too bad on their own, but they add up in the end.

The backtracking works somewhat, which is surprising, but that alone won't save a playable but not fun game.