XV8-Ownage! wrote:Does each individual model need its range checked, or is it majority? (shooting)
Models may not fire if they are out of range. This is checked on a per-model basis, but you may measure to any model in the enemy unit that is in Line of Sight, and casualties may be taken across the entire enemy unit (which is different than previous editions so I understand how it can be confusing). If all models in your unit have Line of Sight to only one model in the enemy unit, and half of your models are in range, then those half make their shots, and after wounds are tallied up your opponent must allocate them across the entire unit, even if the rest of the unit is out of Line of Sight.
XV8-Ownage! wrote:People speak of fire warriors jumping out of a devilfish and getting a 4+ cover save, how are you meant to do that?I find parts of the dfish are in the way.
Likely what you are speaking of is the tactic of moving up a Devilfish, then hopping out behind it and firing underneath. In this case, the Devilfish usually obscures some part of the unit and can potentially give the unit a cover save, but similarly, if it also obscures their target, it would confer a cover save to the enemy as well. 5th edition uses True Line of Sight, which means you check Line of Sight and Cover from the models actual point of view and apply cover based on what is actually visible or obscured. This means a sniper standing behind a chest-high wall would receive a cover save from models shooting at him through the wall, but the enemy models would not receive one from his shots because he has a clear view over the wall.
XV8-Ownage! wrote:When 50% of a unit is in cover, the unit gets a 4+ save. Can the units behind the cover still shoot?
Yes, cover and Line of Sight are checked independently. If models have Line of Sight from within area terrain (which provides cover), then they may shoot. If those models are instead behind a wall that completely blocks their vision, they may not shoot. If 50% of a unit is behind that wall, then the unit gets cover, but only the 50% of the unit that can see may shoot. Remember, you check Line of Sight and range on an individual model basis.
That said, you should always discuss terrain thoroughly with your opponent before the game starts. If, for instance, you want a certain piece of terrain to represent dense foliage and potentially block Line of Sight more than is evident, you might declare that the terrain piece forces models shooting into or out of it to use the Night Fight rules, and models cannot shoot completely through it at all. Terrain pieces can be whatever you want them to be, and can do anything you want them to do, but you should make sure you and your opponent know exactly what each piece does in battlefield terms.
XV8-Ownage! wrote:If a load of kroot are in front of battlesuits/fire warriors, do the battlesuits/fire warriors get cover saves? If so do the enemy get saves when battlesuits/fire warriors fire at them?
The Battlesuits get cover saves if the Kroot actually obscure more than 50% of the unit, which is very easy to accomplish. The Battlesuits on the other hand are much taller than the Kroot, and are easily able to fire over their heads with clear Line of Sight in most cases. You measure Line of Sight from the models actual head, and if from that perspective nothing is obscuring their target, they have a clear shot and their target would not get cover.
Example:
XXX
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XX..........................................................................................
XX
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XX..........................................................................................
XX
The red X's represent a Crisis Suit (and the orange X represents his head), the Yellow X's represent a Kroot Warrior, and the blue X's represent a Space Marine, viewed from the side. The Space Marine cannot see the entire Crisis Suit and thus the Crisis Suit would have cover from the Space Marines shots (which would matter if, say, he had a Plasma Gun). The Crisis Suit on the other hand can see the Space Marine's entire body because he is taller than the Kroot Warrior. From head height, the Kroot doesn't block any part of the Space Marine from the Crisis Suit's point of view, so the Space Marine would get no cover from the Crisis Suit's shots.
Does that make more sense? Just because one model has cover from another does not mean the reverse is true.
Hope that helps!