Dark days indeed

Just saw the sequel to "30 days of night" called "30 days of night: Dark days" on SyFy channel. I did like the original "30 days of night" movie so I was excited to see that they have a sequel. The story lift off with Stella Oleson(survivor of the previous movie) travels around the world telling her story about what really happened in Barrows, Alaska and that vampires really exist. This attracts the attention of 3 vampire hunters who recruits her to join them to kill Lillith, the vampire queen, somewhere in LA. Killing Lillith will handicap the vampires' plan of invading another Alaskan town as it enters another 30 days of no daylight. The plot seems reasonable and it continues nicely where the first movie ended. The vampires were still scary looking and it has its scary moments. Where I had a major issue is on the screenplay of this sequel. Specially on the behaviors of its major characters. Amber ,one of the vampire hunters, was suppose to be this tough brave vampire hunter but when they were on the mission, she acted like this scared hysterical girl screaming and crying. And then she suddenly reverted to this tough bitch when accused to causing their mission to fail. And the other major character Paul couldn't even muster to kill their colleague Harold who was turned into a vampire during their mission. What gives? Such inconsistencies with their behavior. Then there was this sex scene between Stella and Paul which was just plain gratuitous. It was totally unnecessary. And lastly, when Stella manages to kill Lillith, the other vampires just let her walk pass them without harming her. Huh?
Needless to say I was disappointed by the sequel. 2 stars at the best in a scale of 5.