Added Hardmode:

Hardmode is an alternate mode which can be accessed via the button on the top right.

Hardmode makes enemies a lot more aggressive, makes the difficulty scale faster, and causes a lot more elites to spawn

Added Armor:

Armor can be gained through various items and is displayed besides your health. Upon taking damage, that damage is reduced by your amount of armor and your armor is decreased by one.

Added 8 New Items:

• Broken Locket (Uncommon) - Enemies drop rusty chests that contain common items on death.
• Lucky Coin (Uncommon) - ~Luck is on your side~ (Increased Luck)
• Glowing Fern (Rare) - Heal beyond max health
• Metal Plating (Common) - +2 Armor Per Area
• Celesteel (Uncommon) - +5 Armor on pickup, chance to not lose armor upon being hit
• Missile (Rare) - +8 Armor on pickup, damage scales with your armor
• Merc's Canteen (Uncommon) - Enemies drop armor pickups
• Backup Heart (Rare) - Prevent death once

Misc. Changes:

• Added Big Chests, which give you better quality items
• Bosses now drop uncommon items upon death
• You must now defeat the boss in order to proceed to the next level
• Teleporters can't be hit anymore
• Added Shrine of Carnage, which causes you to lose 20% of your max health, and drops a uncommon item.
• Re-added shrine of printing
• Tons of item re balancing and bug fixes
• Added a luck stat and armor stat