Which items to combine to get upgraded weapons.
Available Weapon combos
Pretty sure:
Spree Killer = Mitra (machine gun) + Guanto Saetta (gloves) (increase projectile speed)
Er Metano = Molotov + Sleppa (increase duration weapon effects)
Bajocco = Canne Mozze (shotgun) + Ok capo (toolbox) (reduce cooldown)
Sbarajone = Palla Chiodata (ball-on-chain) + Chiodi daa Croce (nails) (increase damage)
SPATA = The Scrocchi (sword) + Core de sta città (heart) (increase health)
Unsure:
Se Ciao = Bazzuca (bazooka) + Mano di S. Bartolomeo (hands) (increase pickup range)
Disco Inferno = Moooosega (chainsaw) + Lanterna in mano ai cecati (lantern) (increase attack area)
Left:
Er Briberòn (bottle) (health regeneration)
Scarpette (shoes) (increase movement speed)
Occhi di S. Lucia (eyes) (increase projectiles)
Capoccia de Papa (skull) (increase XP gain)
Sacra Sindone (shroud) (reduce incoming damage)
Thanks to Poofcakes for his excellent guide, all credit to his effort. if this guide helps you, please support and rate it via Steam Community. enjoy the game.