Very low budget, so one has to evaluate it based on what they did on a low budget. Practical effects, and having most of the movie take place in one area saves money. The acting wasn't great, nor was it as if random people were hired who never did any acting before, so most of it was not mere reading a script. The Danny character is a bit of a puzzle. When he finally gets a phone call, on a phone that is at very low battery level, he decides to go off on a tangent rather then making sure he gets help before the phone dies. That can be looked upon as wasted screen time, or padding to make sure the film was as long as promised. In the biology lab, the only science books on the counter were physics books, which would have been out of place so that is a bit sloppy for the props people. The film probably delivered what they wanted it to deliver, but it still is a very forgettable film. It is not so over the top that it is a parody, nor is there any reason for the creatures being what they were. It is a dull movie, as Danny is a dull person. It is interesting as the pistol he has is referenced to Jose Wales. In that movie's background info, that civil war pistol was as likely to kill the shooter as kill the enemy! It was prone to misfire.