No I watched it twice.
It was james bond with memory loss meets a nice hot alien and a posse rides out to find the aliensThe hot alien kills the rest of the aliens after not 1 but 2 completely unbelieveable battles where 20 semi competent cowboys with 6 shooters somehow hold their own agains 30 or 40 fifteen foot tall, bullet proof aliens who can leap a 4 story building in one bound, rip a man in half with 1 hand (they have 4), and have far superior weaponry.
There were all kinds of ****** alarms going off, trust me. It wasn't even interesting. (it was the extended version which may have been a factor)