Dwarves have evolved to see in the dark, and even by feeling vibrations through stones to perceive their surroundings.

Dwarves gain +2 to Constitution and +1 to either wisdom or intelligence.

Dwarves are proficient in Common, Dwarvish, and can choose one other language

The dwarves have learned to travel between the planes through secret passageways.

Beginning at level 10 you can create masterwork weapons. These weapons take double the time they would normally take to produce, but they are worth twice what their basic weapon form would be worth.  Additionally they gain a +1 bonus to hit, and can be enchanted up to the rare classification of magic items.

When wielding weapons or armor that you forged yourself you gain additional bonuses to hit and damage. You gain +1 to hit and damage when wielding weapons that you forged for yourself, and +1 to AC when wearing armor that you forged for yourself.

Dwarves are masters of the forge and all types of crafting. You have expertise with one crafting tool of your choice (smith's tools, tinker's tools, etc.) and can spend half of a long rest working on producing an item that you have enough material components to produce.  Basic items are able to be enchanted, but they cannot be classified higher than common magic items.

At 17th level you have truly mastered the forge and are ready to create your Magnum Opus, the greatest weapon you will make in your life.  This weapon will take at least a year to create, but once it is done, it is worth 100x its masterwork equivalent plus the value of the enchantment itself.  You must have 4x the items weight in materials.  It cannot be forged of mundane materials.  When complete, the magnum opus will be a legendary magic item, with a +2 to hit in addition to the effects of its enchantment. This is your life's great work, and you can only produce 1 magnum opus.