Man, I just have to say, this is a truly fantastic atmospheric track! You certainly have no reason to be disappointed in your score, and I'm really glad that you took some extra time to polish this up a bit from the CHIPS version.
The section that begins around 1:47 and goes until the end actually reminds me, oddly enough, of the ambiance in Tourian from the Metroid games. It's got a dark sense of tension, sort of like an 'anything can happen, so be ready' kind of feel to it. You've got all kinds of fantastic atmospheric sounds and ideas going on, some incredibly timing and ideas, and they're brought together incredibly well with a really solid instrument selection.
Your musical elements mesh pretty nicely with the ambiance, although I personally feel that the melodic content could have been much more fleshed out and less sparse, but your percussive game is straight up tight. You really do kind of overdo it with the reverb, though. Dialing that back in general would be good, but some spots end up getting pretty muddy, so I'd suggest ditching all of it and just adding it back in bit by bit. With the overall atmosphere of the track, I do understand what you were going for, but still...when it damages the overall mix, something should be done.
Suffice to say, this is a really solid Ambient track and a very enjoyable listen! You knew that it would be a pitched battle, and you came prepared. Thank you once again for coming in after garlagan dropped out, and I look forward to hearing what you come up with next.
8.94 out of 10