Tenacious Resistance. Once per turn, if he fails a saving throw he can reroll and use either total.

Multi Atttack. Adam can make 4 unarmed strikes, two with his action and a further two with his bonus action. Alternatively, he can make two claw strikes and a further two clawed unarmed strikes with his bonus action (provided he has them out.)

Unarmed Strike. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 9 (1d8 + 5) [bludgeoning] damage. 

Clawed Unarmed Strike. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 10 (1d8 + 6)  [bludgeoning] damage + 2 (1d4) [slashing] damage

Retractable Claws. Adam can use a bonus action to extend or retract his claws.

Rage. As a bonus action, Adam can force himself into a primal state of mind. This lasts a minute. While raging in this way, he has advantage on strength checks and saves. He also gets a + 2 bonus to his damage rolls. 

Parry. Adam can add 4 to his AC.