If you go to the locations in order, you will get everything you need.
Loch Ness - camera, matches (from the pub)
Himalayas - lantern, get footprint photo
Puerto Rico - bolt cutters, get fur
New Jersey - use bolt cutters, matches, lantern
In the monastery.
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.
Climb up and go left. He is just down the trail at upper left.
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 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.
From the mountaintop monastery, go left and down the ladder. Then go right, across the rope bridge, and climb down to the camp and the helicopter.
From the mountaintop monastery, go left and down the ladder. Then go right, across the rope bridge, and climb down to the camp and the helicopter.
On the end of the bar. Get the lantern from the Himalayas and when you go to New Jersey, use the matches and the lantern will light, allowing you to go to the deserted house in the woods.
At the monastery in the Himalayas. You also need the matches from the pub at Loch Ness.
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 can go to any of the sites, but you need a camera from Loch Ness to use at the Himalayas, and the matches from the pub to use with the lantern from the Himalayas when you go to New Jersey. So the best plan is to visit them in order: Loch Ness (get the rowboat photo), then the Himalayas (get the photo and lantern), then Puerto Rico (get the bolt cutters and fur sample). Then go back to Mews, then to any of the three (not the Himalayas) to finish it.