i have reach stage 3. basically, u need machine gun at the start. so build enuf turret factory. 3 MG turret then concentrate on flak turret. MG turret best place at the bend. use motorcycle to help stop. air units r harder to kill, but generate more $$.
dwarf is not gud 4 attack, but best defensive unit at the start of the stage. later stage, u will find units tat can b swept off the feet r pretty much useless.
i think trebuchet can be mobile, but need to be deploy in order to be use. very much like artillery which can be mobile but can't fire while in transit.
scoring system is darn stupid. play longer, get more exp/score. it should be finish the stage faster, get more exp/score. also building a more powerful unit should give better exp/score than building a weaker unit. spam building weaker unit to get better exp/score is pretty lame gameplay.
the game is quite good. 1 major bug. u cant c the tile the character is standing on n tat makes a lot of difference. it is best u make the char move wif cursor, rather than standing at last location.
ceasefire is for soldier injured to make it back to bunker in a haste or rushes to bunker when got arty warning. medic is best for taking crates. nco medic can full heal at random.