Vin used a multitude of weapons throughout the trilogy. The most common weapon she used were glass daggers and coins. On occasion she also used staffs, swords, Koloss swords, window glass, a belt buckle, lanterns and body armor to name a few.

A misting is a person who can only burn a single metal. Clubs, Hammond, and Breeze are all mistings. A Mistborn is someone who can burn all metals. Kelsier and Vin are both Mistborn.

The mists weren't actually killing anyone. They way I took it, it was Ruin killing a percentage of the people who became ill to "balance" preservation turning them into mistings.

Jastes controlled the koloss by paying them, he had wooden disks painted to look like coins so they would feel more human.

A copper cloud was used to hide the burning of allomantic metals. This was used to hide skaa half-breeds from the empire as well as a way to prevent soothers and rioters from affecting their emotions.

They were used for pushing so the mistborn could propel themselves into the air.

The Hemalurgic power is what is used to create Inquisitors, Koloss and Kandra. With this power metal can be used to steal allomantic powers or human abilities (eg. strength, senses). If that metal becomes a part of your body it gives you that stolen power and, once removed, that power is gone.

The Koloss were once human until certain metal spikes are put into their bodies (mainly iron for strength). This also puts them under Ruin's control, as he can influence anyone with metal in their bodies.

When the Lord Ruler took the power of the Well of Ascension he tried to move the world closer to the sun to make the mists dissipate. However he moved it too close and instead of risking moving it to the wrong place again he instead caused the volcanoes to constantly spew ash over the world to cool it down by preventing the full force of the sun to get through.

Kelsier was charismatic, witty, and daring, with a strong sense of justice and a rebellious spirit. He was a natural leader who inspired loyalty and admiration in those around him. He could also be impulsive and prone to taking risks to achieve his goals.

The first time i read through them i didnt notice anything at all. It was only once i learned that brandon sanderson was mormon and a little bit about mormonism in general that i could see some influences. but you really shouldnt let it color your understanding of his books. he never preaches or anything. in fact in the stormlight archive he makes some great points for atheism lol. These are simply fantasy stories that do deal with some in-world religious themes but definitely not trying to convert anyone or anything like that.