i really liked the beginning
and how it was so unique as far as timing went. that sound was really working. (not the alarm it was nice that that faded) but if you had a substitution for that with a similar yet less harsh synth that kept some nice intensity through the rest of the song would be nice.
so basically it could use more intensity in the middle and end just like the beginning. although i'm sure with sound effects and all it could work in the gameplay. anyway 4/5 cuz of that. i really like the pt. 1 though, 'fived that one.