No. A countercharge is still a form of a charge, and models with the Always Strikes First special rule strike before chargers.

It depends on the wording of the spell in question because a countercharge is a reaction normally allowed for Empire Detachments. If the spell allows the enemy to react to charges "as normal" (e.g. Unseen Lurker from the Lore of Shadows), then countercharges are allowed. If the spell does not allow normal charge reactions then countercharges are not allowed.

No. Prayers of Sigmar work exactly like bound spells. Thus, whenever an Arch Lector casts a prayer, it forces any previous Remains in Play prayer cast by the Arch Lector to be automatically dispelled.

Yes. The Hammer of Sigmar prayer does NOT limit the re-rolls to attacks in close combat.

No. It only works on the Engineer himself.

No.

Yes. The martyr effects do not follow the normal rules for hatred and may be renewed at the beginning of each round of close combat.

Yes. His Prayers are not considered to be a bound spell item.

Yes.

No. Only one War Altar exists. The Empire army book includes several references stating that there is only one War Altar, including "...the Grand Theogonist may despatch ONE of his Arch Lectors to do battle from the back of the War Altar."

No. No rules exist for the removal of chariots due to loss of crew / characters, thus the War Altar remains on the battlefield and operates normally (just like any other chariot).

The Empire army book states that the Lore of Light spell is cast by the Arch Lector, thus it would indeed force any Remains in Play prayers (which work exactly like bound spells) cast by the Arch Lector to be dispelled. Therefore, it is best to cast the spell from the Golden Griffon prior to using the Arch Lector's prayers.

No. The Steam Tank is classified as a War Machine. The Victory Points rules clearly state that War Machines never surrender half Victory Points.

The best way to do this is to mount the Steam Tank on a chariot base (50mm wide x 100mm long).

Yes, as normal for impact hits.

The controlling player chooses one of the units the Steam Tank is in contact with, and all impact hits are allocated onto this unit.

No. In order to be able to pivot, it needs to have expended at least one Steam Point on movement.

No. Only spells with a given Strength may affect the Steam Tank. As the Pit of Shades forces affected models to take an Initiative test, it is ignored by the Steam Tank.

Yes, as it is a Large Target.

Simply translate 'Structure Points' into 'Wounds'.

Yes - its Movement is reduced to one and a half inches per Steam Point used.

No. The term "Enemy" in context of a challenge is normally interpreted as an enemy character (or champion) who is actually eligible to participate in a challenge. "

Yes. The unit with the Banner of the Daemonslayer does not begin to cause fear until it is found to be within charge range of the enemy. Measurement of that range does not take place until after the unit has passed the fear test to declare the charge.

They are under the control of the player that used the Casket, but then at the beginning of each of their successive turns, they must take a Leadership test to see if they crumble to dust (for every point they fail the Leadership test by they suffer one wound) as there is no Undead General supporting them.

Yes. The Incantations are released at power level 2D6 for one stolen from a Priest, 3D6 for one stolen from a High Priest, or D6 for one stolen from a Tomb Prince or Tomb King.

When spells are selected at the beginning of the game.