Synergies

Synergies are a type of upgrade only available after certain upgrades have been chosen. Synergies were introduced in 20 Minutes Till Dawn and never existed in 10 Minutes Till Dawn. The icons of Synergies are distinguishable from regular upgrades by having red icons and an internal red border.

This is a list of all 12 synergies, along with their prerequisite upgrades.

Synergy	Description	Prerequisites
Death Rounds	Your bullets deal an additional 10 damage.	Reaper Rounds Light Bullets
Frost Fire	When you inflict Freeze, also inflict Burn for 6 damage per second.	Intense Burn Frostbite
Gun Mastery	Bullet Damage +30% Fire Rate +15% Reload Rate +15% Max Ammo +1 Piercing +1	Armed and Ready Power Shot Rapid Fire
Mini Clip	Reload Rate +75% Bullet Damage +50% Max Ammo -5	Fan Fire Fresh Clip
Overload	When Lightning strikes an enemy that is burning, create an explosion that deals 25 damage.	Electro Mastery Fire Starter
Stand your Ground	Projectiles +2 Fire Rate +25% Move Speed -25%	Siege Fusillade
Summon Mastery	Summon Damage +35% Summon Attack Speed +35% Bullet Damage -35%	Vengeful Ghost Scythe Mastery
Death Plague	Enemies killed by Curse will spread Curse to nearby enemies.	Ritual Reaper Rounds
Generator	When you gain ammo, also gain 35% Fire Rate for 2 seconds.	Recharge Energized
Kunoichi	Increase Fire Rate by 10% and Piercing by +1 every 10 seconds. This bonus is reset upon getting hit.	In the Wind Assassin
Sword and Shield	When Holy Shield is not active, kills with Smite lower the regeneration time of Holy Shield by 1 second.	Holy Shield Justice
Titan	Max HP +2 Move Speed +25% Character Size +25%	Giant Angelic