Armor Class: 14 (Chain shirt)
Hit Points: 18 (4d6 +4)
Speed: 30ft (9m / 6 sqr)
Ability Modifiers: -2 Str, +2 Dex
Small Size: small creatures should use d6 for hit dices
Stealthy: You have proficiency in the stealth skill. (even if DMG didn't say so, all the goblins on MM got stealth)
Nimble Escape: The creature can take the Disengage or Hide action as a bonus action on each of its turns .
Darkvision: 60ft (18m / 12sqr)
Languages: speaks Common and Goblin.
Multiattack. The Berserker makes one weapon melee attack or one ranged attack.
Greataxe. Melee Weapon Attack +3 to hit, reach 5 ft, one target. Hit: 7 (1d12 +1 ) slashing damage.
Properties: Heavy, Two-handed,
Javelin. Melee Weapon Attack +3 to hit, range 30/120, one target. Hit: 4 (1d6 +1 ) piercing damage.
Properties: Thrown: range 30/120,