Chased/attacked by humanoid alien creature beast things. They kill people in insanely violent ways. We (whoever that is) decide to fight back. We try but realize it is no hope. We conclude that we are going to die. I now think, I can’t die, I don’t wanna die. But I see there is no way out. Then I realize I am dreaming and I impulsively wake myself up. Which is foolish of course. I wasted an opportunity to enjoy a wonderful lucid dream.