Goblin Thief

	Classic	Expert	Master	Legendary (For the Worthy)
Life	80	160	240	320
Attack	20	40	60	106
Defense	6	6	6	6
Knockback Taken	70% (Med)	63% (Med)	56% (Med)	56% (Med)
Coins	2	5	5	7

The last column is Master mode in a world made with the For the Worthy seed. Its numbers were measured in the game, not computed here.

For one player in a world before Hardmode. Expert and Master scale life, attack, knockback and coins by the game's own multipliers.

Coins: each kill rolls the coins from 80% to 175% of this value, then rarer extra rolls can add more.

In a Hardmode world

On Expert and Master, a Hardmode world raises weak enemies: when attack plus defense plus a quarter of life is under 80 (100 after Plantera), the game multiplies them up.

	Life	Attack	Defense	Knockback Taken	Coins
Expert, In Hardmode	176	36	6	63% (Med)	4
Master, In Hardmode	264	54	6	56% (Med)	4
Expert, After Plantera	352	72	12	63% (Med)	8
Master, After Plantera	528	108	12	56% (Med)	8

Classic

Item	Quantity	Chance	Kills for 50%	Kills for 90%	Conditions
Spiky Ball	1 to 5	199/400 (49.8%)	2	4	Rolled only when the roll for Harpoon (1 in 200) fails
Harpoon	1	1/200 (0.5%)	139	460

Expert

Item	Quantity	Chance	Kills for 50%	Kills for 90%	Conditions
Spiky Ball	1 to 5	199/400 (49.8%)	2	4	Rolled only when the roll for Harpoon (1 in 200) fails
Harpoon	1	1/200 (0.5%)	139	460

Master

Item	Quantity	Chance	Kills for 50%	Kills for 90%	Conditions
Spiky Ball	1 to 5	199/400 (49.8%)	2	4	Rolled only when the roll for Harpoon (1 in 200) fails
Harpoon	1	1/200 (0.5%)	139	460

Chance is per kill. Kills for 50% and 90% is how many kills give that chance to see the item at least once.