* Flame thrower and chemical thrower units can fire.
* Walls can be attacked.
* AI (in early stages of development).
* Health bars work (and change colour).
* Units and structures have armour (affects the effectiveness of
* Units and structures can now force attack (replaces control-clicking to
apply 25 points of damage).
* When you either complete or fail a mission you are told by EVA and a
message appears at the top (amongst the other messages).