Teleport and escape magics are the only way to make it easier, and they base it on GAME time. So you start at 7am and end at 8am, it counds as 60 minutes. Getting 20- minutes is really, really hard.
I think i know how. I'll skip the mosters go past the posion and don't even battle the ants just go get it and escape! that might work. I'll do I practice run.