Editing Warhammer 40,000/9th Edition Tactics/Adeptus Mechanicus (section)

==Secondary Objectives==
Choosing your secondaries is one of the new parts of 9th and a way to make sure your army always has a way to score on something your army has built around.

<tabs name="Secondary Objectives">
<tab name="Purge the Enemy">
*'''Accretion of Knowledge<sup>Codex</sup>:''' At the end of the game, you get 3 VP for each model you killed with a WT, relic, or the {{W40kKeyword|Vehicle}} keyword and 14+ wounds. Pretty much an improved Slay the Warlord since you can also score against ''any'' model with a WT or relic because of a stratagem; lists where you can't get this up to 6 VP at least are few and far between.  Note that this objective can't be scored on {{W40kKeyword|Monster}}s, and it's generally arbitrary whether a model is one or the other (e.g. Riptides and Ghostkeels are both Monsters, if you're fighting Tau).
*'''Assassinate:''' 3 VP per {{W40kKeyword|Character}} killed. We have the best sniper rifles in the game if we can set them up, and with a 60" range we can hit the entire goddamn table. This is an excellent secondary for us.
*'''Bring it Down:''' 2 VP per {{W40kKeyword|Vehicle}} or {{W40kKeyword|Monster}} with W10 or less, 3 VP for W11 or more.  Worth considering if your enemy brings enough tanks to max it out.  If your enemy brings nothing but high-wound vehicles, you can double-dip this and Accretion of Knowledge for 9 VP per W14+ vehicle you destroy, but that will usually not be the best choice.
*'''Titan Slayers:''' 10 for killing a single {{W40kKeyword|Titanic}}, 15 for 2, and no additional rewards for more.  
*'''Slay the Warlord:''' 6 VPs for killing the enemy {{W40kKeyword|Warlord}}; you have the best snipers in the game, but the problem lies in this secondary's value. It's only 6 points - Assassinate and Accretion of Knowledge will both surpass this as soon as you kill your third valid target, and they'll equal it at two valid targets.
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<tab name="Warpcraft">
*'''Abhor the Witch:''' This is really a Purge the Enemy type objective, but it is what it is.  Score 5 victory points at the end of the battle for each enemy {{W40kKeyword|PSYKER CHARACTER}} unit that is destroyed, and 3 victory points for every other enemy {{W40kKeyword|PSYKER}} unit that is destroyed.  The only secondary in this category you can take in pure admech but stacks nicely with your super-snipers and Assassinate to remove those dirty witches. As with all armies very good against Grey Knights and Thousand Sons
**One of Admech's strengths is we can take allies with little penalty so an inquisitor or a guard patrol can add up to 5 psykers cheaply if you want to switch the other psychic objectives on.
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<tab name="No Mercy, No Respite">
*'''Eradication of Flesh<sup>Codex</sup>:''' Gain 3 VP for each battle round where you have at least one {{W40kKeyword|Adeptus Mechanicus Vehicle}} on the field and your units have killed more {{W40kKeyword|Infantry}} units than the enemy killed your {{W40kKeyword|Vehicle}}s.
*'''First Strike: ''' A worthwhile consideration, but the biggest problem with this, much like Slay the Warlord, is that we simply have other things in this category which we're more likely to earn more points with - the hard cap of 8 is deeply unfortunate.  Score 5 victory points at the end of the battle if any enemy units were destroyed in the first battle round, and score an additional 3 victory points if more enemy units than friendly units were destroyed in the first battle round.
*'''Thin their Ranks:''' Kataphrons provide some quite lovely anti-infantry firepower, and you also have solid AT. A very worthwhile secondary to supplement Titan Slayers and Bring it Down.  Bear in mind the math on this one: its net VP is functionally 1 per W10+ model killed, and then 1/10 ''floored'' of the W9- models you kill.
*'''While We Stand, We Fight:''' The "Keep Cawl and the Knight Alive" secondary. Works well with Cawl's Moving Castle if you want to stack some bigger things in that area. We've also got access to more healing on our vehicles than most armies, making this one seem particularly appealing (for castles who have little choice) the reality is you might keep Cawl alive but that Knight is gone as is your third vehicle. However if you want to leverage this you don't take Cawl or a Knight you take a skitarii horde with cheap characters and surround your characters with 150 skitarii and secutarii and say "bring it".
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<tab name="Battlefield Supremacy">
*'''Hidden Archaeovault<sup>Codex</sup>:''' At the beginning of the game, your enemy can pick one objective. You score 2 VP at the end of each round you control this objective, and score an additional 5 if you end the game with this objective under your control. It's a good thing that you have plenty of ways to castle around the objective and Acquisition at Any Cost makes sure you won't let your grip falter from a bad turn of shooting.
*'''Uncharted Sequencing<sup>Codex</sup>:''' Select one unique objective marker for each round at the beginning of the game. Score 3 VP if you control the objective you selected for that round. 
*'''Domination:''' If I hold all objectives I've won primary and this doubles up on it for a big timmy win. The problem is in the game where you lose primary and need to make points back you will lose big. The horde and navy builds can do this but engage on all fronts is better. The castle will struggle with this one as it struggles with primaries.
*'''Engage on All Fronts:''' Not the best choice for a Cawl castle. The cogboys prefer to keep under the bubbles of Cawl and Kastelans. However, a brilliant choice for the skitarii horde or navy, which were made for this.
*'''Linebreaker:''' A worthwhile consideration if Dragoons hadn't been nerfed to oblivion. If you want take this mission use serberys raiders and Imperial Knight allies. The navy is probably the best mono build to attempt this but has easier options.
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<tab name="Shadow Operations">
*'''Investigate Sites:''' One of the better secondaries to go with a Castle. Concentrating your forces near the center and then blasting away under the cog banner is a solid method for gathering points, just make sure to bring some chaff to handle the digging while the big guns fire. **Alternate take: a poor choice; it sounds good in theory, but many enemies will want to take the centre and you tend to want a gap between your vehicles and the enemy. It also makes it harder for a castle list that already struggles with the primary as it gives you an extra point to hold; meanwhile, the skitarii horde can do it but might well be better with raise the banner high on most missions.
*'''Raise the Banners High:''' Similar to Domination, and if you're going for one you may as well take both. If you decide to plant yourself on a point and not move, you're more than capable of becoming a real thorn to get rid of. However, one must be careful not to spread oneself too thin. 
**Alternate take: one of the stronger skitarii horde choices and a passable navy choice. The main thing to note is that on missions with 6 objectives this will be a lot higher scoring than on missions with 4 objectives.
*'''Repair Teleportation Homer:''' The main problem with us using this secondary is that it requires infantry. We've got speedy serberys raiders, but our infantry is neither quick enough to get there nor durable enough to reliably get the full action off without support. You could punch all the way there with a moving castle, but you could have also spent the turns moving getting points from Investigate Sites.
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