This update aims to balance and strengthen unit classes. The Engineering and Druid classes have primarily been reinforced, and Thief classes have also been added; however, the AP skills of the Assassin and Berserker have been weakened in exchange. The rebirth feature was also too powerful, so it has been weakened as well.
*I have many concerns about balancing AP-related skills and the reverse mechanic. Please feel free to drop by Discord anytime if you have any advice to offer.
edit: Discord link
Reverse Changes:

• Only knowledge and skills are carried over when reversing, while base stats and mastery are not inherited.
  

• The Druids upper class has been changed, and a new base class, Disciple of Nature, has been added.
• A Warmth skill has been added, which either removes water puddles or melts snow.
• A Wildfire skill has been added, which sets grass on fire.
• Terrain-based support skills have been combined into one skill, which operates differently depending on the terrain tile.
• Summoning skills are similarly combined.
• Most nature-based attack skills have been adjusted to receive force-type damage that gets an INT bonus.
• A skill called Identical Twins has been added, which summons two creatures per skill use.
  

• Mechanical units now leave scrap instead of a corpse when they die.
• The Tinkerer now needs scrap to create machines, starts with three scrap, generates it when a machine is destroyed, and has a skill to automatically collect scrap.
• The Mechanazzle has been changed to a physical attack unit instead of self-destructing.
• Rocket-type and gun/grenade skills have been added.
• Construction of the Helidrone has been added.
• A dual-wielding gun class called Gunslinger has been added as an advancement for the Gunner.
  

• Scout, which can use both swords and bows, has been added and can also use nature school skills.
  

• The Noble starting party, removed in version 1.0, has been re-added.
  

• The passive AP increase for Thief classes has been removed, replaced with a skill called Nightshade Burst, which increases AP for a certain number of turns and puts the user to sleep afterward.
• The Assassins Instinct continuous skill has been modified to trigger only once per turn, and instead, a Rage skill that sustains Assassins Instinct for a certain number of turns has been added.
• A new upper class for the Assassin, Shadow Master, has been added.
• An upper class for Brigand, Dreadnought, has been added.
• An upper class for Outlaw, Shadow Striker, has been added.
• Dark Warrior has been changed from a tank-style class to a warrior type, advancing from Fighter and specializing in dark magic and two-handed weapons.
• A new class similar to the previous Dark Warrior, Terror Knight, has been added.