Survivor' Kit: What happened this week

If you missed ``Survivor: The Australian Outback'' on Thursday, here are the essential developments on CBS' hit adventure-reality show for episode 13 of the series: <br><br>_ Voted Off: Elisabeth

Friday, April 27th 2001, 12:00 am

By: News On 6

If you missed ``Survivor: The Australian Outback'' on Thursday, here are the essential developments on CBS' hit adventure-reality show for episode 13 of the series:

_ Voted Off: Elisabeth Filarski, the footwear designer who lives in Newton, Mass.

_ Remaining Survivors: Colby, Keith, Tina.

_ Immunity Challenge: A memory game of trying to match pairs of items hidden away. Colby wins. Who else? He's won the last four times in a row.

_ Weight Loss Challenge: Here's something Keith wins. The four contestants are given a scale, and bag-o-bones Keith estimates he's lost 27 pounds.

_ Quote: ``I'm just feeling as though my stomach is eating itself.'' _ Elisabeth.

_ Reward Challenge: A grueling obstacle course that combines elements of past challenges. The prize is a biggie, though: a new car, along with a full meal, a hot shower, and a night's sleep in a tent. Colby wins, and is also surprised by a visit from his mother.

_ Home Cookin' _ Colby's mom is horrified by how much weight her son has lost while he's been gone.

_ The Grand Finale: The $1 million winner will be revealed in a two-hour special next Thursday.

_ Nielsen ranking last week: First place, with an estimated 28.4 million viewers.

_ Official Web site: survivor.cbs.com/primetime/survivor2/