it wasn't even that complex. it was dumb as f**k(relatively speaking) IMO, anyone who has trouble following it should start chewing some ritalin. the only ambiguous thing was the ending, and it was ambiguous on purpose, there's no point trying to deduce if it's either a dream or not. the editing was a bit too fast which is why it gets a bit stressful to watch. seriously, it's not the goddamn mariana's trench.