DOOM Retro v2.4.3 is now available. It may be downloaded here, and its release notes are as follows:

• Optimizations have been made to further improve the overall performance and stability of DOOM Retro.
• The ENTER key may now be used as an alternative to the Y key when responding to messages requiring a yes/no answer.
• When the player dies, the amount of health displayed in the widescreen HUD will no longer always be zero. It will instead often be a negative number to indicate how much damage was inflicted upon the player in order to kill them.
• A bug has been fixed whereby the ammo and armor CVARs could be set to negative values and cause a crash.
• Animated decorations will no longer shift back and forth in the final release of Back To Saturn X E1: Get Out Of My Stations or if the Minor Sprite Fixing Project v1.8 is loaded.
• The message displayed when the player tries to open a locked door when they don’t have the required key now always distinguishes between keycards and skull keys.
• An r_messagescale CVAR has been implemented to allow the scale of messages to be changed between big and small. It is big by default.
• The messages displayed in the alternate widescreen HUD now use the same font that is used in the console.
• The player’s path in the automap is now disabled when vanilla mode is enabled.
• An additional 300 map-specific fixes, enabled using the r_fixmaperrors CVAR, have been applied to maps in both doom.wad and doom2.wad.
• The following bugs from Vanilla DOOM have been fixed:
  • Missiles no longer explode when impacting with the sky in some instances.
  • Lost souls will no longer slowly drift backwards when attacked while charging.
  • Lost souls will no longer forget their target immediately after attacking them.
• When using the kill CCMD to kill all monsters, all missiles fired by those monsters will now explode at the same time. Also, a missiles parameter may now be used to only explode the missiles.
• ccmdlist can now be used as an alternative to the cmdlist CCMD, and explode as an alternative to the kill CCMD.
• The idclev cheat may now be used in the console while no map is loaded.
• The maximum value the r_screensize CVAR can be set to is now 7 rather than 8. Setting the CVAR to 8 previously had no effect.
• The player can no longer trigger secrets when in freeze mode.