For a first time in minor key, this sounds amazing! Time for evalution
Pros:
+2: amazing intro
+1: fast drum beat = cool
+1: effects (in the build-ups)
+1: catchy
+1: Switch to Slower Tempo for build up (omg)
+2:sad, but still fast paced, which is hard to make!
+1: i dont know what to call them (i think like techno cymbals) but there cool!
+1: subttle transations

CONS:
-1: repetive
-1: Not sad enough for "regret"
Score: 8/10
Great song tho, if you added some riffs you could potentially get 10 points, but it was really repetitice, good for ambeince tho!