Editing Warhammer 40,000/Tactics/Questoris Knight Crusade (30k) (section)

===Cerastus Knight Acheron=== 

This thing is an absolute monster. It is equipped with a Hellstorm S7 AP 3 flamer that will wipe out anything that isn't in Terminator armor. Being a template, it ignores cover, meaning anything in power armor that comes near it might as well just be swept off the table. Since it's a Cerastus Knight, it has flank speed, allowing it to run 3d6". Between that and its 12" movement, you should have no problems getting  into place to use the flamer to devastating effect.

Its chainfist of absolute death allows it to reroll 1's on the D table whenever you are hitting something with AV. Essentially, if you punch it, it dies, but that was already true for a D weapon. With Machine Destroyer, this is the Knight that you want to charge [[Titans]] with, as they will be almost guaranteed to do some damage. Also, it has a heavy bolter as a secondary weapon, not a heavy stubber, giving you a tiny bit more punch.

It's an effective horde manager and pairs well with the longer ranged knights, or with an Errant to kill off any Terminators that get close to it.
The biggest drawback to this monster, other than having to buy it at forgeworld prices, is that it costs 40pts more than a paladin, and it can't hit anything more than 16" away. You pay a premium, and you are going to have to work to kill people every turn.

Because of it's close ranged nature, making the Acheron your Seneschal is worth considering. It has to get in close to use it's weapons, and a 3+ Invulnerable will vastly improve it's chances of reaching the enemy. That said, the Acheron will lose it's Invulnerable in Melee, unlike the Lancer.

It actually makes a really good Uhlan too, since its shorter ranged weapons aren't really affected by the reduction in ranged distances ''(the Heavy Bolter is twin-linked, so still retains a bit of function if you really HAVE to shoot has something out of flamer range)'', whilst the ability to scout coupled with its already increased speed (due to being a Cerastus) means you are going to get the best use out of that flamer.

https://www.forgeworld.co.uk/resources/PDF/Datasheets/AcheronFW.pdf