After opening a portal to an aggressive alien world during an otherwise uneventful day at the science lab, the first thing Gordon Freeman wanted was a gun.
Luckily, his dear friend Barney had one, and was at that moment occupied with shooting strange crab creatures attempting desperately to copulate with his face.
Upon meeting up with his old drinking pal, Gordon silently voiced his desire to be gifted with Barney's petite pistol. Alas, Barney was only gifted with 2 phrases in his vocabulary, and neither of them involved handing over weapons.
Sighing, Gordon raised his crowbar to his old friend's face and began to pummell it relentlessly.
After the deed was done, Gordon pried the pistol from his pal's fingers, and then set off on his quest to save Black Mesa, and the rest of humaniity.
-> This was how my adventures in the Half-Life universe began, in narrative format.