When determining your character's ability scores, increase your Constitution by 2 and Dexterity by 1. You can not increase a score above 20.

Your character can speak, write and read common and one other language of your choice.

You have a walking speed of 25 feet to begin with.

You have advantage on saving throws against being poisoned, and you have resistance to poison damage.
You don’t need to eat, drink, or breathe.
You are immune to disease.
You don't need to sleep, and magic can't put you to sleep.

The character can sense heat from people, animals, etc. in a 60 ft circle around them. The heat generating from people/animals is a deep red colour. This ability can only work in darkness. (Can see through the spell Darkness) 

For 30 minutes, you can stick to any surface and can walk on it like it is a regular floor. You can not use this on walls not made of a solid material.

When driving a vehicle you add +10 to the movement speed of the vehicle. At level 11 and again at level 18 you increase the movement speed by 10.

You have the power from celestials, and so your AC is increased. Your AC is 13+Dex modifier+Con modifier. However you cannot wear any armor at all.