Finished the game. A bit over 18 hours with 95% completion (some challenges not finished). It felt just right - not too short, not too long.
It was a wonderful experience, one I have not had in gaming for a very long time. Lara felt alive and real. The story was cool and engaging, it all was flowing really nicely. Controls were great too (played with an Xbox360 gamepad). I didn't mind the QTEs at all, they felt well placed and not overused. Weapon upgrades were cool, as were the new skills Lara gains with more XP. The optional tombs were a bit disappointing... it was pretty much one puzzle per tomb and they were all really easy. Actually, the prepurchase DLC tomb (Tomb of the Lost Adventurer DLC) was the longest and most "advanced" I would say.
The game looks GORGEOUS! All maxed (new Ultra shadow setting in latest patch!) on my PC and the experience was flawless (1080p, FXAA as AA, TressFX ON). And everything looks so pretty! I'm sure this game will come out on the new PS4, so more people can enjoy it with wonderful graphics Lara has so many details! It's incredible! Her skin, scars, clothes, blood, the hair, body motion and all the other things - they really add up to a amazingly looking character! Plus how she interacts with the environment - a lot of details here too... the way she jumps, climbs, breathes. walks, runs, protects her face from heat or wind, puts her hands against the wall when moving close to one... those are small details, but they really add up!
Highly recommended, if anyone is on the fence. Best gaming fun I had in a very long time!