Well, if you wanted numbers.. here's a combat round.
Target is a kaiju similar to the giant snake.
15 Str.
+1 Toughness
+1 Force Field.
So.. 15+3 HP, 1/1 forcefield.
To throw Stirk a bone, lets deploy one of his exoskeleton nuclear-armed infantry, along with the brand new Jaeger with the Kaiju Dragonfire Cannon.
Jaeger/Dragonfire Cannon
Power [C], AP [E], DoT 1d6, AP [D]
ADD Exoskeleton Infantry with Nukes.
Power [A], AP [C].
Rocket Launchers
Power [F], AP [F].
Most stats for players are letter-grade based instead of raw numbers.
Jaeger shoots first.
First up, damage dealt is based on the raw Power score, which rolls one die according to a table..
- power = 0. F power = 1. E power = 1d3. D power = 1d5. C power = 1d7. B power = 1d9. A power = 1d11+1 S power = 1d15+2.
..but there's a staging roll first, mostly so that very low damage units have some chance of getting lucky with cumulative fire. 1d6, on a 1, use the next letter grade down. On a 6, use the next letter grade up for power.
It's a 6, so the dragonfire cannon is pretty square, and will roll 1d9 for base damage. It comes up with an 8, scoring a really square hit.
The kaiju then has to defend against an 8 strength hit. It rolls 1dStrength, to soak up raw damage. That's 15, so..
1d15 -> 1.
Welp, kaiju gonna take a blow. It takes 7 damage, soaking only one..
..but Stirk's Jaeger has some armour piercing. That's a wholly different roll.
Essentially, the kaiju now has to succeed a second time to see if the soaked damage manages to penetrate. The difficulty of the roll is based on the unit's AP stat. The dragonfire cannon has a E, so..
AP works by making the kaiju beat a series of target numbers. For every failed roll, one point of blocked damage gets through anyway. AP doesn't help much with the scoring of massive hits, but it makes getting some damage through much more reliable. The Kaiju always rolls 1d Strength, although Strength+2 is used if the kaiju has extra armour.
if AP is F, there's 1 roll with a TN of 1.
For E, 1 roll with a TN of 1.
D, 1 roll with TN 2.
C, 2 rolls with TN 2.
B, 2 rolls with TN 3.
A, 3 rolls with TN 4.
S, 4 rolls with TN 6.
Start from the bottom and work your way up. For the E, 1d15 gives.. 3, so still soaked. Then the F, 1d15 gives.. 10, so the one point of damage is indeed soaked. Do note that only damage blocked can be made to go through with AP.. a hit dealing a base damage of one can't do more than one damage, no matter how much AP the attacker has.
The Kaiju then takes 8 damage. Forcefield is hit first, then bonus HP, then Strength is reduced. That leaves the kaiju at 11/15 HP. The Kaiju's new strength is now considered to be 11, not 15, although if it could regenerate, strength would be restored along with HP. Damage was done, so normally I'd roll to see if a weapon or system was knocked out, but I'll omit that for this demonstration.
The nuclear armed infantry go next. Staging roll.. is a 1, so it only rolls as if it was a B. 1d9.. 7, so 7 base damage.
Kaiju tries to soak that, 1d11 (new strength), gives.. 10. So it tanks the radioactive fire.
..or does it? that has significant AP, after all..
for C.. 1d11 -> 11. 1d11 -> 11.
for D.. 1d11 -> 2, that's one through.
for E.. 1d11 -> 8
for F.. 1d11 -> 8.
So not quite unscathed, one damage goes through, droppping the kaiju to 10 strength, with a chance to knock something out.
..They also have conventional rocket launchers, although those are much weaker. Staging roll.. 2, so no change. F power is 1 damage, which is always soaked (1d10 will always be at least one), so AP matters..
for F.. 1d10 -> 3.
And the conventional weapons -tink-, for no damage.
The fire-based damage over time effect will occur in the next round, not the current one. It's basically a free attack with 1d6 power and an AP rating of D, lasting for the next turn.