There is no sure way to win the Yeti game. The game was badly interpreted. Move forward twice and try to get a hunter to make a wrong move, then go by him to the left. This will usually happen after one or two tries.
In the monastery.
At the monastery in the Himalayas. When you have received the lantern from the head monk, go outside and climb farther up the mountain. One of the monks will challenge you to beat the game.
On Cryptids, you go to the Himalayas and ask for the Yeti skull. He will not give you it, but you will be handed a lantern to 'light your way' as he claims.
Climb up to the first snow-covered level, and go left, and he will meet you.
At the monastery in the Himalayas. You also need the matches from the pub at Loch Ness.
Climb up and go left. He is just down the trail at upper left.
You have to look for Bigfoot/Yeti in the Himalayas, the Jersey Devil in New Jersey, the Loch Ness Monster in the Loch Ness in Scotland and the Chupacabra in Puerto Rico.
You need the lantern from the Himalayas, and the matches from Loch Ness, so that you can travel in the dark forest at New Jersey.
There are matches in the Pub at Loch Ness. Go right from the loch and they are on the bar in the Pub. You will need them for the lantern you get in the Himalayas.
Go back to the Himalayas, and now you can climb a rope at the right side (above the helicopter), and go back to the monastery for the lantern.
There are matches on the bar in the pub at Loch Ness. You need them to light the lantern from the Himalayas when you are on the motorcycle in New Jersey.
The head monk is in the monastery in the Himalayas. There are others, including one above the monastery who tests you before you can pass.