At the hostel

Holdall for hostel kit
Personal washing kit 
Towel
Pyjamas
Change of clothes for hostel
Spare cloths for second days hiking including Socks
Underwear

Food

On the hill

Note all this needs to be warn or fit inside you sac.

Rucksack (min 30L)
Boots suitable for winter
Winter walking trousers
Thermals ?
Base layer (not cotton)
Mid Layer
Fleece jacket or similar
Socks
Water proof Jacket
Water proof over trousers
Gaiters
Warm hat
Gloves at least 2 pairs
Whistle
Torch
Survival bag
Extra warm top (over layer)
Bag to keep kit dry in sac
Flask
Food
Ice Axe (Out side)
Crampons (could be out side better in)
Helmet
Walking poles (optional)
Sun glasses
Ski goggles
Buff / scarf (optional)