Amorphous. The slimefolk can move through a space as narrow as 6 inches wide without squeezing.

Corrosive Form. A creature that touches the slimefolk or hits it with a melee attack while within 5 feet of it takes 4 (1d8) acid damage. Any nonmagical weapon made of metal or wood that hits the pudding corrodes. After dealing damage, the weapon takes a permanent and cumulative −1 penalty to damage rolls. If its penalty drops to −5, the weapon is destroyed.

Nonmagical ammunition made of metal or wood that hits the pudding is destroyed after dealing damage.

The simefolk can eat through 2-inch-thick, nonmagical wood or  in 1 round.

Spider Climb. The simefolk can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

melee weapon attack. short sword attack +1 to hit  reach 5 feet hit:3(1d6 +2)

stretch. the slime folk may grow 1 size larger for one round.

Split. When a slimefolk that is Medium or larger is subjected to lightning or slashing damage, it splits into two news  slimefolk if it has at least 10 hit points. Each new pudding has hit points equal to half the original slimfolk, rounded down. New slimefolk are one size smaller than the original slimefolk.