"Whoops". This is the moment you empathise with Abe - a former slave for the RuptureFarms meat processing plant, tasked with rescuing his species from a fate worse than death (death, then being turned into pies).
It's a game with a strong message, but it's also kind of funny when the Mudokons you're trying to save end up squished by a boulder or dissected by a big revolving blade. Abe's post-failure utterance expresses a sliver of regret, but not so much that you can't enjoy the dark humour in their stupidly gory deaths.
Thanks Abe. Watch out for that landmine. "Whoops".