First things first: the mix tonality is rather off-kiltre at the moment -- the 300Hz-1.5kHz region seems to be missing in action, and there's a significant 3-10kHz emphasis too. Without compensating for those everything seems out of balance, so I applied some master EQ to compensate before getting down to the proper critiquing. The vocal, drum, and guitar sounds all suddenly made much more sense once that had been done. If this mix tonality sounds right in your room, then I reckon you need to have a look at your monitoring situation, reference more often, take more frequent breaks -- or all of the above!
Anyway, on to the details. The reverse effect into the first verse is perfectly judged. It can be tricky to makes these things work, but you've pulled it off really nicely here. The edit is also very canny from a commercial perspective, as it brings the vocal into view a good 12 seconds earlier, and means that you hit the first iteration of the chorus material by around 0:40. This is no small consideration in a track like this, which is unusual in introducing its first vocal chorus rather late in the game.
Even with the buss EQ in place, the verse vocal feels like it has maybe a touch too much 4kHz, and this impression increases in the choruses. I'd probably add a little 500Hz in the verse too to thicken the tone a bit and help the listener really identify with it. You've made interesting use of an obvious artificial reverb on it too -- it makes a good contrast with the slightly claustrophobic bass and kick vibe you've got going. The chorus vocal presentation doesn't quite work for me, though. It sounds rather too isolated without the double-track, and the rich reverb seems out of place in this style for me. You could make more of those BVs, too, especially as you've captured rather an effective tone/effects combination for those.
Speaking of reverb, I think maybe you're relying on it too much in general. At the moment, the clarity of the parts just seems slightly veiled and homogenised, so maybe try turning down the reverb returns/lengths overall to see if this helps. Some careful EQ'ing of the returns would also probably be worthwhile.
The kick feels slightly over-clicky, and the lower tom feels like it could be reined in a bit at the low end, because it booms a bit too much in the chorus fills for me. The rest of the drums, though, sound good, and the snare cuts nicely without feeling too slender, which is always a bit of balancing act. I do wonder, though, whether you've carved a little too much midrange out of the overheads, because the cymbals feel slightly thin, and it'd be nice for them to have a fraction more body when the drummer really starts flailing around.
I like the wiry guitar sound in the verses, and it cuts through really well in the first chorus too. Initially I wondered whether it had enough gravitas to carry that first chorus, but I think it's fine -- it's bigger than the first verse, yet leaves more room for the second chorus to impress. The extra guitar drive in the second chorus is a good idea in principle, and certainly helps the transition into the final choruses, but the downside of it is that it emphasises the 4kHz region that is already at risk of harshness on account of the vocal, so you probably need to do some further EQ tweaking there.
Tuning is pretty good again, and it sounds like you've also done some timing work too, because the verses seem less lumpy in this respect than on some of the other mixes. The stereo image feels a bit 'W'-shaped, in that there's not too much going on between the extremes and the centre most of the time. Some people engineers actively prefer this kind of presentation, but I'm not as keen, and it usually affects the sense of blend adversely for me, as well as presenting difficulties with balance changes in mono. That said, your mono-compatibility is good in terms of tone, even though the wide-panned guitars do inevitably drop quite a lot in the balance.
This is a good solid mix (albeit tricky to get into initially given the skewed tonality) and offers some important new input as far as dealing with the final choruses entry is concerned. Thanks for posting -- and, of course, thanks too for hosting the contest!