The update is performed by installing the new version over the old one using the supplied installer.

This update:
* adds 23 new missions:
   * most of them are very easy to average;
   * many of them are based on unusual and different design/logic;
   * some of them make use of the new features introduced by this update;
   * some of them are multi-phase and multi-mission;
* fixes/improves pre-existing missions (also making use of the new features);
* increases the chances of finding a recharge in explosive objects from 25% to 33%;
* adds levels labels;
* adds the disabling of message points;
* avoids the teleporting of the EM to the same square of the RM or a square too close to it, even when the RM is on a square which does not have walkable squares around (this avoids multiple consecutive collisions that quickly drain the shield);
* avoids that damage is done to the shield while an enemy is hit (this, in practice, fixes for good the repeated EM-RM collisions issue that, in rare cases, might have caused an almost instant death);
* makes the auto-orientation of connected staircases choose the best orientation context-wise and RM-wise;
* adds a rendered-on-the-fly background to mission information and pause screens;
* excludes the video modes with dimensions bigger than the desktop's;
* replaces the stars with thumbs-up icons for resolutions;
* allows the handling of special events/keys while displaying a notice;
* removes the joypad analogue axis support;
* reworks controls reconfiguration:
   * adds an end notification;
   * changes the joypad actions;
   * removes the aborting by means of [ESCAPE];
   * removes the overlapping of button and keys flags;
   * makes other changes;
* improves the themes settings:
   * reworks the configuration handling;
   * adds [F2] for quick switching;
* improved the themes:
   * touches up the wallpapers of the themes "Sci-Fi" and "Underground";
   * fixes/improves the rotating lamp graphics in the themes "C64" and "Sci-Fi";
* optimizes/improves:
   * the handling of levels lighting;
   * the allocation and referencing of enemies objects;
   * the EM spawning and AI;
   * the universal function for the interpolated rotation of BGRA graphics;
   * the tiles handling module;
   * the controls handling;
   * the screenshot grabbing;
   * the SDL initialization;
   * some code bits here and there;
* replaces Mix_Volume() with Mix_Pause() + Mix_Resume() to (un)pause sounds when the game gets (un)paused (this hopefully fixes the occasional sounds corruption on Windows);
* fixes the picking up of the aiming device (the check was broken, so it was possible to pick it up multiple times);
* fixes the printing of the levels number (the last digit of levels (-)100-109 was not printed);
* fixes the loop counters usage in m_CreateMap() to allow more than 65535 permanent animations;
* fixes the disappearing of information in the menu when an alphanumeric key was pressed (the handler returned an action insted of doing nothing);
* fixes the error message and the log file name reported by records submission;
* fixes the work path on Windows (%TMP% was statically expanded at compile time);
* adapts the code to the latest version of the custom framework the game is built on;
* improves the icons:
   * adds more icons;
   * touches up graphics;
   * adds the icon size choice to the AmigaOS and AROS installers;
   * fixes the MacOs and Windows icons sizes;
* fixes/improves/updates both the user's and the developer's manual;
* reworks/updates the artwork;
* fixed/improves the installers;
* brings other minor changes/improvements/optimizations.