Your Constitution score increases by 2 and your charisma score increases by 1.

Hal-orc dragonborn hatchlings grow rapidly.  They can walk 1 day after hatching, attain size and development of a 10 year old child by the age of 4, and reach adulthood by 20.  They unfortunately live only 60 years. 

Half-Orc dragonborn are taller and heavier then humans, standing well over 6 feet tall and averaging almost 275 pounds.  Your size is Large.

Your base walking speed is 30 feet.

You have a draconic ancestry.  Choose one type of dragon from the Draconic Ancestry table.  Your breath weapon and damage resistance are determined by the dragon type, as shown in the table.

When reduced to 0 hit points but no killed outright, you can drop to 1 hit point instead.  You can't use this feature again until you finish a long rest.

When you score a critical hit with a melee weapon, you roll one of the weapon's damage dice one additional time and add it to the extra damage of the critical hit.

You can speak, read, and write common, draconic, and orc.  Orc is a harsh, grating language with hard consonants.  It has no script of its own but is written in the Dwarvish script.  Draconic is thought to be one of the oldest languages and is often used in the study of magic.  The language sounds harsh to most other creatures and includes numerous hard consonants and sibilants.

When you take damage from a creature in range of a weapon you are wielding, you can use your reaction to make an attack with the weapon against that creature.  Once you use this trait, you can't do so again until you finish a short rest.