I aim to continue at least until Halloween... or death, whichever comes first.
我的目标是至少坚持到万圣节，或者死掉，管他哪个先实现呢！
Whichever of you comes first will receive a prize.
你们谁先来，谁就会获得一份奖励。
Whichever (of you) comes in first will receive a prize.
无论(你们)谁先到都可以得奖。
Whichever (of you) comes in first will receive a prize.
不管(你们)谁第一个到都可以得到一份奖品。
Whichever (of you) comes in first will receive a prize.
(你们中)谁先来谁得奖。
Whichever comes in first will receive a prize.
谁先到就会获奖。
Whichever comes in first will receive a prize.
谁先到就会获奖。
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