n medium construct mindless 

Perception +6; darkvision

Skills Athletics +9

Str +3 Dex -3 Con +4 Int -5 Wis +0 Cha -5

AC  17 (13 after its construct armor breaks); construct armor; Fort +10, Ref +3, Will +4

HP 20; Immunities bleed, healing, mental, necromancy, nonlethal attacks, poison, unconscious

Construct Armor The animated armor reduces all damage it takes by 9. However, after a critical hit that deals damage, or after its HP drops below 10, its construct armor breaks. Its AC drops to 13 and it no longer reduces damage by 9.

Speed 20 feet

Melee [>] longsword +11 (magical, versatile p), Damage 1d8 + 4 slashing

Melee [>] armored fist +9 (agile, magical), Damage 1d6 + 4 bludgeoning

Beginner Box, page 57.