Major improvements to the save system and puzzles. — Unbearable Steam update #61534

-A new tab is added in the start menu to load the game, with this a new system is included in which the date and time in the save slot is shown with total precision. -Fixed errors that did not allow saving properly. -Fixed bug where key items would re-spawn when returning from a scene. -AI navigation is improved, it will no longer go through objects. -Key object locations are changed. This to be able to get the pistol more easily in the early game. -Puzzles are modified and new elements are added. -Fixed the error that did not allow shooting when loading the game. -Adjustments in the volume of various sound effects. -Corrected the position when dodging when you are close to an enemy.