I won't necessarily say it's a bad game, it starts out strong with a lot of the collectibles and exploration that made the first (two) games great. But as you progress through it the game becomes increasingly chorelike, filled with bugs (in some regards inexcusably so) and the story both tiresome and exasperative.

I simply do not recommend getting this. And if you do, go in with LOW expectations and not paying more than a sales price for it.

This is undoubtedly the worst game of the trilogy. Not only it till have plethora of bugs, not only mouse and keyboard controls are clunky ad it feels when you do those stupid fixed camera segments, though there are plenty of cases when this happens climbing and this suddenly rotates your controls and lead to you falling to your death, not only animations are reused where they should not be (i.e. when jumping from one ledge you are hanging upside down to another game treats like gravity has rotated its axis by 90 degrees and you fall parallel to horizon).
The absolute worst part is writing. Lara is written like an imbecile, constantly mucking things up and handing all important things to bad guys on a silver platter sometimes even begging them to take them.... Bad guys have omniscience and teleport constantly to correct places to receive all those freebies from Lara. Lara refusing to take guns from killed enemies and instead opting to go with just a knife, Lara killing a guy with a but of his rifle and throwing this rifle away just to proceed the fight with a bow.... Bad guys deciding to congregate and get killed offscreen for no reason. Yes, the same guys with earlier omniscience. And i could proceed with the list for next 5 pages. Writing is atrocious. both director and writers should never been allowed to touch the game.
And so the trilogy ends, not with a bang, nut with a whimper. Disappointing.

A decent game. Not on par with the other 2 chapters, but it takes a very small space on SSD, while it still looks very good. Has some good shooting mechanics and cinematic sequences.
6,5/10