RADAR added...

Added a RADAR to make it slightly easier to find the enemies (thanks to COA for the suggestion).

It was quite difficult to implement a RADAR system, without any coding. I went through several different approaches and finally thought of a way  to get  the RADAR working quite well with all the features I wanted.

Press "SPACE BAR" to activate the animated RADAR HUD.

It accurately highlights the direction of all enemies (but not their distance).
A red fringe appears will appear when an enemy is in dangerous proximity of the player.
Release "SPACE BAR" to close RADAR HUD.

Although it's working well now, I also want to add some sound effects and a nice fade animation for the locator dots,just to finish it off.