This is a very easy game. There is a few trick to it.
A very long post, coz this is one of my stress realse
game. 
In the world map,
1) choose to attack those bigger map. Reason is on bigger map,
there is more resources and AI will have 2 or 3 base. Meaning 2or3
computer player vs you. The bigger map oso mean that they can have
enough resource to support more then 3players. AI give u a handicap
if you attack them early on, meaning instead of 2 or 3 base, they
will only have one.
To deal with 2 or 3 base, u need a resonable large initial start
off strike force, the honoury guard. At start, while multitasking
the base building, rush all ur force to one of the their base
and kill it off. Which can be done in a mere 5to10min into the
game.
2)Try attacking map that give off honoury guard 1st. Coz honoury
guard are stronger and arent include into the population cap.
3) The only hard map that give in game bonus are the one that
call the last stand or something where u cant make unit and have to
destroy 3 computer player (Orge). One way to win this will be to
have alot of honoury guard. The others is to rush the base and
forego capturing of lookout pt. (just 2 or 3 will do). Computer
start off with limited unit, so if u push early in the game and
wipe out 1or2 base early, u will most likely win. The necron truely
shine in this map. It 2 main strongest unit can teleport. At start
teleport it into the computer base, and b4 u know it. 1 base is
gone. Elder is the hardest to play in this map. Coz they need
energy to replace most of their unit, & basic unti kinda die
too easy.
4) The space port is the other hard map. Best to attack it 1/2
way thru the game. at start, just move ur strike unit to the bottom
to kill off one computer player. Make sure u fun let any builder
escape.
In the RTS map
1) You can forget abt place unit to guard those map you had
conqure eariler coz, all the building that had been build remain
even after you won. So in short, b4 u win, make sure u have 2 or 3
base fully build. I normally build 2nd or 3 base very near to
computer spawn area. This make defending easy and fast. U need to
atleast defend 5 time to gain an upgrade to ur heros. I think.
2) reason of build more then one base is to rise ur energy
building cap. 6max per base. Beside, base oso give 6max turret.
except neron 4max. and ogre unlimited. This oso help kill the
computer faster when defending.
Unit wise.
For elder, they are more fun to play, but think the weakest
among all. Elder can be rather irritating to play, coz they r
either very slow or fast but do little damage. Since there is only
2 main type of damage, anti troop or vehicle/building. Just divide
your troop into 2 big gp. 1 shortcut key for each. so Juz focus
attack on one unit to the next. For anti troop, i only build wap
spider mainly. best coz they move at normal pace and can teleport.
Their bomb do come in handy. Alot of damage. If cap is reach for
the unit. think it is 3, i will build one dark reaper.
for anti vehicle, i get 2 (cant rem the name) of those orange
super short range, but large gun. Normally put them on speed, coz
of their range, take ages to even hit the enemy if not. I dun build
alot coz most vehicle are anti vehicle.
I tend to skip those weapon platform. Too much work, esp when u
gp them with troop unit. I only go for 2 vehicle unit, namely those
walker and prism (Main unit, 2max)
Walker coz they deal out alot of melee damage, cheap to build,
abit weak and die rather fast. Prism is irritating to enemy if used
correctly. It break up formation, rending them unable to attack. So
if u use it enemy, make sure to put all ur troop on shooting stand,
meaning no melee even when close. That is when the combo of walker
and prism come in. Walker are vehicle, hence wont get thrown back,
so this mean it get to wack the enemy when they are in disarray.
Prism keep the troop lying on the ground.
The sniper, well those are a gd support unit. one is more then
enough, but since there is 2 such unit in the strike guard, i dun
normally get them. They dun do damage or kill at all, but they have
super long range, hence put them on shooting stand, since they r
invisible, u can really leave them alone, for they dun really get
kill. But the morale damage they coz really shine. Afew shot from
them, u see enemy morale drop to zero, they break and run ard like
fools.
For tal
This is a very fun and easy unit to play with. 1st of all, dun
go machine path. Cant rem the name.. but build a kal commander post
or smt that allow u to build T-rax. T-rax not really great, but can
take an awful lot of punishment. Their stealth unit r only good at
capturing lookout pt. or if u upgrade them to anti vehicle, they
actually fair better. esp their EMP. Very useful to have.
unit to build is those nasty dog. They are a troop killer. They
r fast and keep the enemy troop busy in melee. hence cant shoot
back. can take load of hit too. 2max.
next is there regular super long range fire warriors. Those are
a must have. which make the bulk of ur army. 4~5 is will shred the
enemy in no time. But i keep it to 3 to prolong the game. Remember
to increase their damage and since they have like 8 in a gp, (i get
2 addon unit rather then shield, unless IMO since they out range
most other unit. and i forget to turn it on 90% of the time)
Pathfinder, they are useless. But they are the only unit to see
invisible enemy unit. But i use the commander(hero) to do that.
hence my 1st gear is tat ability to see stealth unit. Pathfinder,
low damage and short range.
the other troop to get is those predator like unit that can heal
themselves by cannibalize. Those are a tone down version of the
dog. But there is like 10or 12 in a gp. Take an awful long time to
even kill of one unit of those. Very gd at disrupting the enemy
troop formation.
Vehicle unit to get, there is that giant ape like thingy, get
those till u hit the vehicle cap. Those are like unstoppable tank.
They do melee too. But rem to leave 5 vehicle cap for ur t-rax.
The reason why tie is so easy to play is b'coz their tanker unit
are really powerful and can take alot of hit. Even their weaker
tanker have numbers to make up for it. Which they can produce
faster then u can kill them. Add that to their super long range
shooter, the shooter can stay at a safe distance and concentrate
their shot.
The tactic to win a dog fight is simple.
To win a dog fight, always send in ur melee to prevent their
shooter form firing effectively. Then use ur shooter to pick off
their unit one at a time. Concentrate ur hit one unit then move on
to the next.
