Aww so nice, thank you for the compliments!
The cubes on the floor was a point of contention internally - we were deliberately trying to piss players off a bit, also since the game is so short. We may have gone a bit overboard in that regard. BTW you can also use laser pointers to pick up the cubes if you don't want to bend down to pick them up :)
After you get to Deja Vu you have to "deliver the packages" (I won't tell you how but it's not too hard to figure out). Somehow that voice instruction doesn't get played properly - we implemented a bug fix for it but our final submission was 2 minutes before deadline so we didn't have time to build + test the fix :( If you want to try again, it's a "happy" ending worth the show ;)