To be perfectly honest, I find it difficult to find a single word of clear-cut praise for this film. The acting never gets better than mediocre, and is at times laughably bad. The dialogue creaks, making me wince at a few of the sillier lines (delivered, of course, with deadpan earnestness). The film was obviously shot with a budget of about zero dollars, and the effects are pathetic, in the rare instances they actually exist. Finally, the whole "vampire plague" thing has been done to death, and many of the plot elements were so familiar that I felt they had been cobbled together from other works.
Despite all this, though, I could not help but like the movie a little bit. Perhaps I just felt sympathy for what was obviously a heroic effort by a no-budget team to make something entertaining; in any case, I was rooting for them all the way, even through the many less-than-stellar scenes. Is "Abe's Tomb" really worse than all those other cruddy vampire movies that were blessed only with bigger budgets, and whose bad actors happened to have famous names? All in all, "Abe's Tomb" maintains a certain charm despite itself.