AS-is, no disclosures. Do not disturb occupant.
All VERY important things to read. You will not get this house for less than what's due on the mortgage, as the bank will bid against you. YOU will be responsible for going to court and evicting the occupant. Said occupant will be pissed, and will most likely strip and/or destroy as much of the interior as he can on his way out the door.
Personally, I have never seen an auction property that has ever gone for a price where it's worth purchasing. They always go for a price where after repair, you've paid for fair value, and can't make a profit. My wife and I buy, rehab, and resell houses, and have done so for 25 years.