Basically, I couldn't figure out what you're supposed to be doing.
A graphical interface with *points* would help a lot.
It's not like you're supposed to collect only certain falling objects, because all of them kill you. You're also not supposed to collect them by touching them from the side, since the result is the same. So why do the first couple of hits seem as if you 'collected' the falling items?
If you have several lives, they should be shown on the screen, so that we know something undesirable happened when we lose a life.
If it's about staying alive as long as you can, then again, the time should be shown onscreen (keep a high-score). You can also leave the boundaries of the screen, just sit and wait, so if it's time-based game, this gives us an opportunity to effortlessly wait as long as we need.
If this is a problem with incorrect dimensions, then you need to set the value from "Edit / Project Settings / Player / Resolution and Presentation"; in the Newgrounds Project System.