thanks for the nice comments and tips, Northern.
As for the soundtrack, it is 4 minutes long, but there are several over layered musical compositions and effects, so it shouldn't stay the same.
The part about been a Ghost, well, the story is not over yet, so with time things will make more sense.

Specially why everything is "green".
It was a puzzle, the 4 lights, yes, that's something you have to figure out on your own.
The grenade room, did you use the terminal there?

After you get out, you need to figure out the final puzzle.
If you want to know what to do, I could email you, don't want to spoil other people game.
I didn't record a voice as I wanted to keep this game simple, otherwise it would complicate things too much, and if it failed, I would have wasted too much time. This way I can finish it sooner and see how it goes. If people like it, I will invest more time on it. Currently my right hand hurts, RSI problems, so I have to work slow...
Thanks again.
www.William-K.com
www.Wusik.com