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I've never seen anyone use a Thunderfire so I'm curious how this is played. Any unit hit by a TF moves as if they were in Difficult Ground. Does this mean that:

1) bikes and jump packs have to make a DT roll to avoid dying to move
2) they just roll to see how far they can go

No, only models hit by a Subterranean Round count as being in difficult terrain.

But yeah, Bikes and Jetbikes will have to take Dangerous Terrain tests if they move, Infantry Make Normal Difficult Terrain tests (or One less if already in Difficult Terrain) and Jump Infantry can either choose to move as Infantry (Rolling 1 or 2 D6 as needed) or Use their Packs, in which case they take a Dangerous terrain test.

However, it works different for vehicles who will instead take a Dangerous Terrain test if they move instead, even walkers.

Edits Galore: I can't Speel

My codex say any unit must move as if in difficult terrain the next turn if hit with the subterranean blast.

However, this also includes skimmers.

Oh and if infantry is moving in difficult terrain they move 1 less die.

**tremor Any unit hit by a subterranean blast will move as if in difficult terrain in it's following movement phase.
If the unit is actually moving through difficult terrain, it rolls one less dice than normal to determine it's maximum move.
A vehicle hit by a tremor shell must take a dangerous terrain test if it moves in the following movement phase.
This even applies to skimmers, whose delicate grav-engines are pummeled by the shockwaves.

The jump pack troopers can walk out as infantry the bikers need to roll a dangerous terrain test.
the jump troopers would have to roll regardless if they flew out of difficult terrain thunderfire cannon or not as per the rule book jump troops have to roll entering and leaving if using jump packs

Gwar! wrote:However, it works different for vehicles who will instead take a Dangerous Terrain test if they move instead, even walkers.

Bold: How do you figure?

KaloranSLC wrote:

Gwar! wrote:However, it works different for vehicles who will instead take a Dangerous Terrain test if they move instead, even walkers.

Bold: How do you figure?

Ok, I apologise. Correction: Walkers take Both a Dangerous terrain test and a Difficult terrain test.

Rules for tremor are:

Tremor: Any unit hit by a subterranean blast will move as if in difficult terrain in its following Movement phase. If the unit is actually moving through difficult terrain, it rolls one less dice than normal to determine its maximum move. A vehicle hit by a Tremor shell must take a dangerous terrain test if it moves in the following Movement phase. This even applies to skimmers, whose delicate grav-engines are pummelled by Shockwaves.

Relevant Bits bolded. As Walkers are Units in their own right, they Will count as moving through Difficult Terrain (and so Roll 2D6, 1D6 if already in Difficult Terrain) and make a Dangerous Terrain test because the rules regarding it Apply to all vehicles.

Thanks for clearing that up! I love my Thunderfire.

Well good. That's the way I read it too. Now anyone got a c-note I can borrow to go pick up a couple?

Walkers only would have to take a dangerous terrain check if the terrain would have been dangerous terrain for troops moving through it. IE it has to be dangerous terrain to begin with it doesnt become Dangerous from difficult. They just roll one less dice.


PG. 72 rulebook.

Difficult terrain only counts as dangerous terrain for walkers if it would do so for infantry.


If a walker fails a dangerous terrain check it is immobilized.

Yes, however the rules for Tremor Specifically State that "A vehicle hit by a Tremor shell must take a dangerous terrain test if it moves in the following Movement phase."

That is why Walkers will take the Dangerous terrain test, not because it is walking through Difficult terrain. If the rules said "Vehicles move as though they were moving through Difficult Terrain", then Walkers would only take a Difficult Terrain Test. Looks like the wording was intended to affect skimmers as well (as the "Vehicles move as though they were moving through Difficult Terrain" wording would not affect Skimmers) and has doubled its effectiveness against walkers.
Intentional? Perhaps. Perhaps Not. This is GW we are talking about, who knows how they think TBFH.

So. to summarise the effects of a Tremor hit in open battlefield:
Infantry and Beasts/Cavalry: Difficult Terrain test
Jump Infantry: Dangerous Terrain test for Full movement or a Difficult Terrain test as Infantry
(Jet)Bikes: Dangerous Terrain Test
Non-Walker Vehicles: Dangerous Terrain test
Walkers: Dangerous Terrain Test and Difficult Terrain Test

RAW looks pretty clear on this one. Whether it is intended to affect walkers with both difficult and dangerous terrain tests is totally up to a house rule as the line "If the unit is actually moving through difficult terrain". And this line comes right after (in explanation to) the any unit hit blah blah is in difficult terrain blah blah.

But there is a line that specifically spells out that vehicles treat it as dangerous terrain, and so any RAW argument against is beaten right there.

However, I may bring this up (as I didn't notice this before, and we have 1 guy here that plays with the gun on occasion) and see if they want to house rule it something different (their interpretation to what they may expect was intended) or play it as is.

Good catch though, I didn't notice this before.

Walkers are different from vehicles and have their own specific movement rules so I'd say no.

Hollismason wrote:Walkers are different from vehicles and have their own specific movement rules so I'd say no.

No, Walkers are still vehicles. If Tremor Said "non-Walker vehicles" then that would be the case. It does not, it affects ALL vehicles. No offence, but your claim that Walkers are somehow exempt from things that specify all Vehicles is one of the silliest things I've seen on DakkaDakka for a while (and I should Know, I write 90% of them)

Gwar! wrote:

Hollismason wrote:Walkers are different from vehicles and have their own specific movement rules so I'd say no.

No, Walkers are still vehicles. If Tremor Said "non-Walker vehicles" then that would be the case. It does not, it affects ALL vehicles.

Ayup. After having it pointed out earlier, this interpretation is 100% correct.