Feeling that you aren't able to breathe or like your throat is being crushed just before you wake up could have a physical cause.
During REM sleep your breathing slows down and your breathing muscles lose some of their muscle tone. This is normal but sometimes your brain gets confused and interprets it as you not being able to breathe or as someone choking you or smothering you.
This would be especially likely to happen around the time you are waking up, when the sensations of your body in the waking world are starting to come back.
This feeling is common during episodes of
sleep paralysis. I think the Swastika could represent something that you find wrong or distasteful, possibly about yourself.
Zombies are creatures that act but don't think about what they are doing and don't have control of their actions. Could you feel that you have lost control over yourself or over something in your life?
Could you have been acting out the dream in your sleep and given yourself the scars?