Me and a friend are leapfrogging more or less through the entirety of Dark souls. I'm human waiting near the first bonfire of the catacombs. I'm currently a gravelord(going for darkwraith, but that sword is nice) and right when I spot the summon sign for my friend I get invaded by a guy with too many X's at the start of his name.
I see him at the end of the hall, I used to invade around here so I know the spawn. But so far all the invasions I've done and times I have been invaded recently were against people completely overgeared. I see him he sees me. I hit my friend's summon sign and the time it took me to hit yes on the summon gave him time to finish the spawn animation, but he started applying an enchant to his weapon. A mistake.
I sprint towards him, I'm medium weight thanks to havel's ring and catch him with a jumping power attack with the gravelord sword, taking off a respectable chunk of health right as he's finishing the animation. We circle for a few seconds and I hear my friend being summoned. And I somehow, probably half luck, predict the invader feeling he needs to end the fight, switch to my holy broadsword and take a bait swing. And he falls for it, I recover from the faster swing just in time to parry and riposte his attempted counter, ending the fight with my starting sword.
My friend gets there in time to 'well what is it?' over the corpse. Unfortunately since I neglected to slot that particular emote I just shrug.
When we were doing my friend's turn to be human down by pinwheel, he came across a summon sign and summoned them, it turned out to be the same invader and we jolly cooperation-ed our way to beating the game's easiest boss.
Dark Souls 1