Treasure Chests are objects found throughout the various stages of the game. There are multiple different treasure chests with different rewards.
Small Chest Edit
Chester's Chest (pictured) Edit
The Iron Whale has two Chester's Chests in the Plague of Shadows; the first is the standard one which gives Plague Knight the Throwing Anchor. The second is in the Plague Knight only section which is where Plague Knight meets Chester and obtains the Vat.
Meal Ticket Chest Edit
Large Chest Edit
Large Brown chests exclusive to the Plague of Shadows. When found in the Plague Knight only sections of the Order of No Quarter levels, they contain the various Relics. When found in other stages they give Plague Knight as many Health Tonics as he can carry.
Vortex Chest Edit
Treasure Knight sometimes attacks by throwing out a dark blue chest. Shortly after landing it creates a current that pulls the player toward it. If the player touches it they are sealed inside, lose gold and then become vulnerable to a follow up attack from Treasure Knight.