Bosses
Boss health scales with # of players at a rate of +80% base HP per each player past 1. For example, Evil's Protector has a base HP of 3000. With 3 players, its health total is 3000 + 2 * (3000 * 0.8) = 7800. Each boss is guaranteed to drop one of the items in the "drops one of the following" section. If you defeat the boss again, it will drop one of the remaining items until they have all been dropped. After that it will pick another random item and begin the cycle again.
| Appearance | Name | Drops |
|---|---|---|
 |
Evil's Protector |  Demonic Bar (12) 100%  Force of Wind 100% Drops one of the following:  Melee Foci 25%  Magic Foci 25%  Range Foci 25%  Summon Foci 25% First kill:  Demon Heart 100%  Demon Cloak 100%
|
 |
Queen Spider |  Cave Spider Gland (10-20) 100% Drops one of the following:  Spider Claw 25%  Spider Charm 25%  Webbed Gun 25%  Frost Piercer 25%
|
 |
Void Wizard |  Void Shard (25) 100%  Recall Scroll (12-20) 50%  Travel Scroll (5-10) 50% Drops one of the following:  Void Staff 33.⅓%  Void Missile 33.⅓%  Magic Stilts 33.⅓% First kill:  Empty Pendant 100%
|
 |
Swamp Guardian | Drops one of the following:  Razor Blade 33.⅓%  Guardian Shell 33.⅓%  Dredging Staff 33.⅓%
|
 |
Ancient Vulture |  Vulture Mask 10% Drops one of the following:  Vultures Talon 33.⅓%  Vultures Burst 33.⅓%  Vulture Staff 33.⅓%
|
 |
Pirate Captain |  Deep Ladder Down 100%  Coins (300-500) 100% Drops one of the following:  Hand Cannon 33.⅓%  Pirate Telescope 33.⅓%  Spare Boat Parts 33.⅓% First kill:  Pirate Sheath 100%
|
 |
Reaper | Drops one of the following:  Death Ripper 25%  Reaper Scythe 25%  Reapers Call 25%  Shadow Beam 25%Base Level Incursion Drops:  Gateway Tablet 100%  Shadow Essence (20-25) 100%
|
 |
Cryo Queen | Drops one of the following:  Cryo Blaster 25%  Cryo Glaive 25%  Cryo Quake 25%  Cryo Spear 25%Base Level Incursion Drops: Gateway Tablet 100%  Cryo Essence (20-25) 100%
|
 |
Pest Warden | Drops one of the following:  Venom Slasher 25%  Venom Shower 25%  Living Shotty 25%  Swamps Grasp 25%Base Level Incursion Drops: Gateway Tablet 100%  Bio Essence (20-25) 100%
|
 |
Sage and Grit | Drops one of the following:  Bow of Dualism 25%  Dragon Lance 25%  Dragons Rebound 25%  Skeleton Staff 25%Base Level Incursion Drops: Gateway Tablet 100%  Primordial Essence (20-25) 100%
|
 |
Fallen Wizard | Gateway Tablet 100% First kill:  Wizard Socket 100%  Abyssal Cloak 100%
|
 |
Mother Slime | Base Level Incursion Drops: Gateway Tablet 100%  Slime Essence (20-25) 100%
|
 |
Night Swarm | Base Level Incursion Drops: Gateway Tablet 100%  Blood Essence (20-25) 100%
|
 |
Spider Empress |  Empress' Mask 10% Base Level Incursion Drops: Gateway Tablet 100%  Spider Essence (20-25) 100%
|
 |
Sunlight Champion | Base Level Incursion Drops: Gateway Tablet 100%Drops one of the following:  Dawn Helmet 33.⅓%  Dawn Chestplate 33.⅓%  Dawn Boots 33.⅓%
|
 |
Moonlight Dancer | Base Level Incursion Drops: Gateway Tablet 100%Drops one of the following:  Dusk Helmet 33.⅓%  Dusk Chestplate 33.⅓%  Dusk Boots 33.⅓%
|
 |
Crystal Dragon | Base Level Incursion Drops: Gateway Tablet 100% Depending on Incursion type:  Omni-Crystal  Pearlescent Diamond
|
There are 3 bosses that must be defeated to beat the game. They are Pirate Captain to unlock the Deep Caves, Sage and Grit to unlock the Desert Temple and Fallen Wizard to unlock Incursions. Those bosses might be enough to beat the game if you find a very rare structure in The Deep Caves.