Monsters, Creatures, and Other Beings, in order of appearance, reading beginning to end:
Ice Barbarians (if outside, will be on skis and probably with a youngster on their back carrying a small bow for hunting)
Kalkoth (think like a small, short stubby ice lion. Looks like it could pass for an evil Pokemon or something)
Kanu Dogs (used for pulling sleds)
Baknar (Closest approximation is a large horned polar bear, possibly with the stats of a grizzly. Slit their skin and you get a useful but repugnant oil which can be used to keep out the cold - if you can stand the smell)
Ice Barbarian Mutants (Immune to Mindblast, and can use Mindblast on their opponents)
Javek (two-headed serpent)
Doomwolf (probably not native, I think they accompanied the emissaries of the Darklords visiting Vonotar)
Helghast (I think this *was* an emmisary of the Darklords visiting Vonotar)
Akraa'Neonor (undead, was summoned by Vonotar so I don't think you'll find them in Kalte natively)
Crystal Frostwyrm (nasty snake with transparent skin so you can see it's icky innards... ewwww. Shatters into fragments when killed.)
Equipment:
Don't expect to find anything made of wood or metal. The majority of weapons and tools are carved from bone. Metals are rare and extremely valuable.
If you don't mind some bookkeeping, you should keep track of food and other supplies. Make sure players have tents and furs or can otherwise keep warm.
Weird items of the Ancients can be found in the caverns, such as the blue stone discs and triangles used to unlock doors.
Locations:
The caverns of Kalte were constructed by the Ancients, and can be accessed from (amongst other methods) the lower levels of Ikaya the Ice Fortress, numerous cave entrances around Kalte, or accidently should the ice you're walking on give way.
The Ljuk Trading Post is quite possibly the only place in Kalte thats anywhere near safe. The Ice Barbarians value being able to trade with outsiders here, so you're not likely to have an Ice Barbarian infant shoot you in the eye. You can only reach Ljuk by boat in the summer, when the ice melts.
Ikaya the Ice Fortress is the home to the leader of the Ice Barbarians, the Brumalmarc.
Thats all I can come up with for now