How can I win the super jackpot at the casino?

Hint 1 of 4:

First of all, you need to win the key to get into the super jackpot room from
the slot machine.  There's no trick to that -- just keep trying.

Hint 2 of 4:

Once you get in the room, you'll find out quickly enough that it's a trap.

Hint 3 of 4:

The goal here is to beat them at their own game.

Hint 4 of 4:

Try attacking the crocodile who's in the room, before he gets to you.  If you
lost to the crocodiles after spinning the wheel, try entering again, but this
time, attack first.