Snow on Christmas day

This year had an extra feature - snowballs could be picked up from the ground and used as range weapons:

Fireball test

"Minimal track" means that the fireball homes in on a target slightly. They require care when aiming. I suspect players can dodge them easily unless the he has to stand still. They might be a good counter to someone blocking a door or passageway. A volley of triple-fireballs would be quite deadly to a closely-packed group.

"No damag reduc" refers the damage not being reduced with distance. It hit me for 25 several screens away.

More Gram tips

Gram means "Grand Shaman" - one of the community's many slang words.

Dragging the shamans out allows the group to kill them first, while only using a single invisibility potion.

Another tip is to keep yourself healed until he casts confusion, since being confused can get you trapped and killed. He only seems to cast it once. After that, you can let yourself be injured without much risk.

Escaping on a ladder

It isn't always reliable.

Vault ceiling raised

You can now build upwards into a large amount of space: