Japan's Minami Katsu became the women's medallist after the two stroke rounds.
Katsu shot a pair of two-under 71s around Metropolitan and Kingswood to be the leading qualifier at four-under.
"It was a very big goal to win the stroke play. I'm really proud,'' she said.
The achievement will help boost Katsu's world ranking of 49. And she will be one of the favourites in the matchplay after winning the Japan amateur title under the same format last year.
She will play New Zealand's Alanna Campbell in the matchplay first round at Metropolitan.
Campbell is already warmed for the massive challenge, having played two holes just to grab the last place in the matchplay field.
She parred the second hole of a four-way play-off for the last three spots in the women's knockout competition.
Hannah Green of WA and Celina Yuan of NSW were the leading Australians, tied fifth at one-under in the tough weather conditions that confronted all players in the two stroke rounds.
The second round, interrupted by extreme heat and then late storms yesterday, was finally completed at Metropolitan this morning.
For everything Australian Amateur, visit www.golf.org.au/australian-amateur.