Really nice for a first submission. Keep it up.
LOL, Very nice
It started good, got a tad slow in the middle, but then took right off again. Made me laugh hard for awhile when the Scientists first appeared.
Very nice work
that was good
i didnt think that a few parts were real coz in half life you can't ditch yuor crowbar but that was got but diferent
i started lurking at newgrounds when flash 4 was new, and i have never laughed so much. your timing is perfect, your jokes ironic, your pacing excellent. i'm suprised you haven't been blammed to hell, really.
LOL OMG THAT WAS FUNNY
Im a big fan of half life, this rocked, good work :)