I have to say kind of like this one, far more than I expected. Obviously it's an amateur movie, but it has quite a few good qualities. Most of all, the movie doesn't try to be anything it can't be, and I've seen far worse zombie flicks than this.
The relatively good
The premise, that we don't really know wtf the Higgs particle could do, is great. As is the location with those creepy dark tunnels. The special effects, while far from spectacular, are mostly decent, and used sparingly and effectively. The price is free, and it doesn't get better than that! The length is 75 minutes, not too long and fortunately they didn't try to drag it out to get to 90 minutes.
The bad
The plot. It's the zombie movie plot, though I kind of like the ending. The first part of the movie is rather slow. The characters are one-dimensional and not well developed, the Walking Dead this ain't. The scientific background is very rudimentary. You'd expect some kind of long ugly rambling complicated explanations from these scientist types, but it's skipped merrily over, which is just as well I suppose.
The first part also has no incidental music but this picks up in the second half, and is fairly well done there. It seems very uneven though.
The ugly
The acting ranges between mediocre and plain bad. This isn't surprising as they're all amateurs, but still something you should know. Again, this is most bothersome in the first part before the action starts.
All in all, 6 out of 10 quarks. The people involved in making this have good cause to be satisfied with the result.