Elves

The Elf player character takes 20% more XP to level, but has the following traits:

Spatial Awareness: Much like Dwarves with stonework, Elves have a chance to recognize secret doors and passageways even when not actively searching and roll with advantage when they are.
Innate Immunity - Paralysis: There is something that's hard to pin down about Elves. Elves cannot be paralyzed.

Darkvision: Creatures with darkvision can see in the dark, usually out to 60 ft or so. It's not enough to read by, but is enough for monsters to hunt by. You can detect most creatures and the shape and large feature of rooms.