From Brotato Wiki
Spider
Item
Tier 4
Stats
+12% Damage
+6% Attack Speed for every different weapon you have
-3% Dodge
-5 Harvesting
+6% Attack Speed for every different weapon you have
-3% Dodge
-5 Harvesting
Price
120
Unlocked by
Win a run with 
Gladiator
GladiatorItem
Spider is an in-game item that can be bought from a Shop or can be found in a Crate. Most Items modify the Stats of the player, and some of them provide additional effects.