Missing Information aims to recreate Valve's original Half-Life 2 storyline found in Raising the Bar.
Well, it is a great mod, there have really been some work in this, but there is also some big glitches that makes it... bad. The stalker-looking enemies is not well made, they doesn't look good, but a nice detail with the laser, but it damaging a little too much. And if you have passed a checkpoint/loading screen, you can't go back without it crashes (or at least it was what happened to me). Then your partner tries to walk down stairs, he just flyes around it, walking in walls and so on, undtil he reaches the ground again.
Anyways, it has a good voice acting and a good npc acting (when he doesn't go down stairs) and the mapping is great.