Added an Ironman mode, which prevents the players from reloading a mission. Actually, that was the default way the game was played until now, so maybe the correct way of saying should be "added a non-Ironman mode". All existing saves are treated as Ironman modes. Non-ironman mode allows the player to restart any mission (except the tutorial one). Unlocks and achievement progress does not get rolled back though (as they are bound to a profile, not the current game-in-progress).
Increased the number of enemies that can appear in chapters 2 and 3.
Increased the base HP of chapter 2 boss.
Added missing translation keys and support for some existing translation keys. Details: