Forum:All Out Attacks OTK and low LP vs Black Pendant

I have 200 LP left, with a Cactus Fighter and All Out Attacks face up on the field. My opponent chooses to attack, while his monster has Black Pendant equipped. I activate Mirror Wall, which halves the ATK of his monster, which is destroyed because its total ATK is now lower than that of Cactus. Now, when his monster is destroyed, I take 500 damage because of Black Pendant, which reduces my LP to 0. However, this battle has generated a Needle Token, and because of All Out Attacks, it must attack. Which generates another token. Which attacks, and generates another token. This loop drains my opponent's Life Points to 0. Now did I lose because I got hit by the effect of Black Pendant, or is the match a draw because all actions had to resolve (ie the All Out Attacks loop)?