Hey Cian,
great subject and one very dear to me.
these are just MY thoughts, you asked for personal opinions so here's mine...
I'm not that fond of the first part myself
the part at 1:21 where you're doing some kind of Eastern sound is very different, too.
1:48 is where I started to get interested but then at 2:17 I started losing interest again.
3:26 my interest started back up again... ;-)
that last gun shot was clearly VERY different from the other ones in the song and so it made the previous ones seem like there was something wrong with them.
again - these are purely opinion and taste, these are NOT things I think are wrong from a performance, mix or production standpoint. purely taste and only because that's what you seem to be asking for in your OP!
feel free to ignore!
performances, especially vocals, were awesome, as usual from you!