love the depth that the violin piano combo creates, beautiful work! also has a mysterious feel to it, i love that, great job.
- Pandasticality

I also agree with the comment below that this song would fit a cutscene really well. Personally I think it'd go really well in a movie as well. For me, it gives me the feeling that I'm back in the Arkham Asylum with the Joker up to his sinister plots, being hunted by criminals and having to hide in the shadows.

I don't know what this portal 2 mod is about, but the name " Repercussions" does give off an Arkham Asylum/ Bioshock sort of vibe. If this is what you're aiming for then you've hit the mark.

Frankly I find the quality of this to be astounding for a newgrounds piece and I'd include it in a standalone game , let alone a portal 2 mod. It must have really taken you a lot of time to make this. If I were you I'd put this in the game without any second thoughts. 5 stars. No question.

P. S. What VST did you use to get those sounds? They sound amazing.

For a Portal 2 mod, it definitely captures the feel of isolation that surrounds the Portal franchise. However, there's more. There's also that unsettling feeling that's carried throughout the piece. Sounds great really, although there might be too much going on for it to be a soundtrack. It all depends if this will play during a cut scene or as background music. If it's for a cut scene, it's fantastic in my opinion. Everything works well together. All in all, it's great. I hope your mod has much success!