I like your art style, its unique and you're effective at designing characters. You could probably take this even further by experimenting with more distinct silhouettes in your character designs. Your background work is great, especially the detail you put into the scenes set in Greece!
Story-wise I liked the premise behind it, but I think you might have lost momentum because of the narration. It led to a lot of instances where you were showing and not telling. Comics are really about showing over telling as much as possible and I think you are talented enough artistically to use this more to your advantage.
Couple of examples: Instead of telling us that Raj escaped from the mysterious large people when he was infiltrating the corporation you could show us a sweet action scene where he barely makes it out. Or the story could begin with the professor doing the coin flip, but then there's a risk of them being discovered so they rush to the car earlier and then the exposition is broken up a bit with action scenes, to balance out some of the more intellectual story-telling. That being said I really liked how much you incorporated (I'm assuming) your academic background to it, it made it a lot more grounded and interesting.
Congratulations on finishing this piece! I think you have a lot of awesome tools that you will be able to carry on to the next one.