I'm no expert, but some of those sound like anxiety dreams. If you're worried about something in your waking life, it can translate into dreams with problems you can't solve - like an attacker you can't defeat.
@Miss Cole I like that interpretation, it fits very well. :) Travelling to Stornoway comes with a lot of family baggage, and I spend a lot of my time there on-guard and just waiting for the inevitable moment when things go to hell. It's a very high-anxiety environment for me (as much as I try to focus on the awesome scenery).
@EMaree Sorry to hear it's not a peaceful trip, but I hope with understanding comes peaceful dreams!
My worst anxiety dreams relate to either my teeth falling out or I can't open my eyes and I'm blinded. Not fun. Waking up is always a relief ^_^