You know when you're switching channels at night and discover one of those unheard/unseen generic sci fi action/horror flicks that like to end on a cliffhanger, but ketchup gore is really the only substance ?
That's essentialy what you get. It's your typical B movie. Passable acting, effects and plot. It's not terrible. I thought there were a couple cool scenes. But it's not a great movie by any stretch either. This is something you would watch at home when there is nothing else on TV.
The only reason I think this movie was better than 2005 "DOOM" is because of game references. Though I am pretty sure one of them upset the entire fanbase