New: Simplified keyboard and mouse control system.
New: Improved display on high resolution screens.
New: Resizable HUD / Minimap and more obvious Minimap symbols.
New: Difficulty level can be adjusted prior to any mission.
Reorganisation of difficulty levels.
Reduced numbers of enemies on Easy / Normal.
Weaker enemies on lower difficulty levels.
Less aggressive enemies on lower difficulty levels (speed / firing).
Refinements to control sensitivity and shield / firing switching