This is Simple:
in the Advanced Game Settings aka Game Constants
u will need to search for the ArmorDamage calculation.
It controlls what kind of Damage deals how many Damage to a choosen Armor.
just do somthing like this:
TankInfo = Heavy Armor and Siege Attack
BazookaInfo = Light Armor and Pircing Attack
ShooterInfo = Medium Armor and Normal Attack
now let them have different Factors to each other:
HeavyA / LightA / MediumA
Siege Attack . . . . 100% . . . . . 50% . . . . . . 200%
Pircing Attack . . . . 200% . . . . . 100% . . . . . . 50%
Normal Attack . . . . 50% . . . . . 200% . . . . . . 100%
this table means (for Siege Attacks):
it deals 100% damage to units with Heavy Armor (so Tanks are equally strong to other Tanks)
it deals 50% damage to units with Light Armor (now Tanks have a HARD TIME with killing Bazookas)
it deals 200% damage to units with Medium Armor (Tanks eat Shooters for Breakfast)
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additional note:
this Table is an Example to show how to do.
If u use this, there could be a big imbalance because of
Tanks do less damage to Bazookas AND Bazookas do more damage
to Tanks => a 400% power of bazookas against Tanks.
so if every unit has same amount of hp and damage then 1 Bazooka can
kill 2 tanks at same time and then the next following tank would have a chance agains this 25% hp bazooka. Just keep this in mind, if u change damage and Armor.
Normal Armor is NOT Medium Armor.
i not sure, but i think same goes for Attack.
and i cant help u to Change the Pictures of the Armor nor the Name.
However, I hope this helped u.