Undead Fortitude. If damage reduces the zombie to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the zombie drops to 1 hit point instead.
Morningstar. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) bludgeoning damage.
Bonechilling Scream. If an attack the Duregar Zombie can see misses, the creature can use its reaction to unleash a soul piercing screech. The attacker who missed, causing the reaction, must make a Wisdom saving throw with a DC of 12. On a failure, target creature is unable to do anything on its next turn, unless it receives damage prior to its turn.