Your Strength score increases by 2, and your Constitution score increases by 1.

Ettin have lifespans comparable to humans. They enter adulthood in their late teens and usually live less than a century.

Ettin are Roughly 13 feet tall and weigh between 500 and 5500 pounds. Your size is Large.
because off your large size you are able to wield a two-handed weapon in one hand without dissadvantage.

Your base walking speed is 40 feet. this movement speed is shared between the two off you

Both players calculate their respective health scores and add them togheter in to one big pool.
Same goes for hit dice.

You can focus yourself to occasionally shrug off injury. When you take damage, you can use your reaction to roll a d12. Add your Constitution modifier to the number rolled and reduce the damage by that total. After you use this trait, you can’t use it again until you finish a short or long rest.

You count as one size larger when determining your carrying capacity and the weight you can push, drag, or lift.

Each player controls 1 head and 1 weapon, each of the heads makes a independent initiative roll for their own turn. the both off the heads have their own ability scores for the purpose off determining their spellcasting modifiers and to hit bonuses and initiative rolls as well as their ability checks. but only one set of ability scores is used for saving throws you must choose witch off the two you use before starting a campaign.

Both players calculate their respective AC's
than add the two values togheter and devide the result by 2 than round up.

You can speak, read, and write Common and Giant.