Patch notes v0.21

New repair and upgrade tool

• Added a new craftable tool for repairing and upgrading structures
• Structures, traps and workstations can now be repaired using part of their required materials
• Building pieces can be upgraded from wood to stone and from stone to metal
• Added new sounds and notifications when repairing and upgrading

Building and demolition

• Items from the toolbar can now be placed consecutively while units remain available
• Manual demolition now returns the materials used to build the object
• Destroyed structures now drop part of their materials as loot
• Added new destruction effects for buildable objects

Coins and inventory

• Gold coins are now physical items that can be stored in the inventory
• Added a new recipe for crafting gold coins at the forge
• Increased the maximum material stack size to 200

Combat and enemies

• Equipped armor pieces now reduce incoming damage
• Adjusted the spawn behavior of the Spider Boss and its minions during waves
• Optimized several AI systems to improve performance during battles with large numbers of enemies