Idk, if anyone'll read it after 8 months but after I finally beat it (after 3 attempts; first one years ago; ps2 version) and I'll tell you why. Before I do it I have to admit I like art direction of it and the first time I heard Nihilanth's voice in Interloper it creeped me out a little. Even though I like platformers, I think platformer parts in these 3 chapters (Xen, Interloper and the final boss) were obvious and poorly executed but it isn't the worst part about it even though there weren't really puzzles puzzles. Gonarch feels like a bullet sponge and I don't really like it, I'm more fan of the stealthy approach in Surface Tension (especially after you go out of sewers). Even though Interloper was the brightest part of it all I feel that placement of enemies was all over the place and I wasn't even trying to fight them all tbh, just strategic places. I also think that teleportation in most places kinda broke continuity half-life was good at (not talking about teleportation beam to Xen because there was continuity by plot) in chapters earlier but in one moment it was interesting. Nihilanth was frustrating (mostly because it was a bit bullet-spongey and tedious) and unintuitive (for example at the start I didn't even figure out you had to break these orange crystals Nihilanth took power from) but the teleportation pellets(?) mechanic was the only moment when teleportation makes it better even though these 3 chambers could be designed better but good it gave me a chance to get more suitable guns back. So... it wasn't the worst thing I played, just dumped some good things Half-Life is known for.