Doom 3 (PC) - 3/5
It's okay. The game does look fantastic for its time (having played the original version seems to have helped, the BFG version seems like it looks worse) but the smaller-scale, more restrained combat isn't that interesting on its own merits, much less compared to its stellar predecessors. The enemy variety is good and I don't mind the slightly-strained ammo count, but the narrow corridors that like 80% of the game takes place in really limits encounter variety, which is perhaps more important, and you rarely fight enemies in interesting configurations that let them work together in cool ways, which is a huge part of what makes the classic Doom games work. I also think the game leans a bit too heavily on powerful hitscan enemies and has too many encounters that hinge on ambushes, which is annoying given this game's slower movement and higher-HP enemies than classic Doom.
I'm sure the scaled-down combat was done in service of making the game creepier or more atmospheric, but as good as the game looks, it doesn't really work out; the horror elements, jumpscares, and plot are all too hokey for me to really get behind. Definitely the weakest Doom game.
Dead Space (PC) - 3/5
A solid third-person shooter that does a pleasant job of imitating Resident Evil 4. The limb-cutting gimmick that enforces precise aiming is very good, and most of the enemies are interesting to fight (with some exceptions; the wall-mounted guys, the tall guys whose body parts split up after death, and occasionally the projectile-spitting babies are tedious), but the game does have some problems with enemy variety. There are very few higher-tier enemies (if we're making RE4 or RE5 comparisons, the only enemy in Dead Space that acts as an equivalent to chainsaw guys, gatling gunners, or the reaper bugs are brutes, the armored necromorphs who only show up like three times and, iirc, always alone). This really impacts encounter variety, since it does feel like you're fighting the same enemies without much variation in formation throughout the game, and it isn't helped by the fact that all of the bosses are just tepid setpieces. The game's visuals and audio are very well-realized; the storyline is a little uncharismatic but still fine. Given how much Dead Space pulls from RE4, it's difficult to not draw comparisons between the two, and Dead Space is really just flatly worse than RE4 (and RE5) in every way.
Dead Space 2 (PC) - 3/5
Solid followup to the first that is around the same level in terms of quality. The visuals are lush and the amount of cool, well-rendered environments you go through is pretty crazy, so right off the bat this game is a treat for the eyes in a way even the first game wasn't. It eschews the first game's more restrained fights for bigger, crazier battles, which I think is overall a positive - it's not as though the first game was creepy, so going all-in on combat is to this game's benefit - but in the end it still shares many of that game's problems with enemy variety (this game does at least add several new types of enemies who work well in groups with others, which is a great thing, but adds a few lame things like the tedious landmine enemies too, and it does nothing to fix the first game's issues with a lack of high-level enemies or bosses). I think the encounter design starts to feel haphazard partway through the game, too - enemies will continuously spawn in during fights with no audio cue and can attack without warning, and given this game's restrained movement options, this means the most reasonable path to victory is often just to die several times and memorize where the additional, surprise enemies will come from. The pacing and combat in this game are solid enough that with some tweaks, I think it could have stood out as an excellent shooter, but variety and telegraphing are just weak enough to drag it down.
Also started playing Bioshock this month and replayed Metal Gear Solid 4 (a little better than I remembered, but still a messy game whose stages start falling apart rapidly once you get past act 2) and Metal Gear Rising (excellent action game with a brilliant final boss, even if it is rough around the edges).