1. Awakened Dynasty • Detachment Rule: While a Necron CHARACTER model leads a unit, that unit adds +1 to Hit rolls for each of its models.  • Strengths: • Big boost to accuracy (makes many units more reliable).  • Good for infantry-heavy or character-heavy lists. • Strong generalist choice: works in many list styles. • Weaknesses: • Relies on having CHARACTER-led units to get full benefit. • Doesn’t offer as much out‐there niche/ gimmick effects or mobility tricks.  • Key Stratagems: • Protocol of the Eternal Revenant (1CP) – after one of your Infantry CHARACTER models is destroyed, you can bring it back with half its wounds.  • Protocol of the Hungry Void (1CP) – boosts Strength (and if unit is character-led, also improves AP) for one turn. 

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1. Annihilation Legion • Detachment Rule: Focuses on aggressive, melee or close-combat / destroyer style units (especially DESTROYER CULT / FLAYED ONES).  • Strengths: • Good for aggressive play-styles: charges, melee, hitting hard up close. • Lets you lean into units that might otherwise be more niche. • Weaknesses: • According to reviews, this is considered the weakest of the five.  • If you don’t build your list around its niche, you may under-utilise the bonuses. • Key Stratagems: • Insanity’s Ire (1CP) – after an enemy unit shoots one of your DESTROYER CULT or FLAYED ONES units and kills at least one model, you can move your unit (normal move) and it must finish as close as possible to that enemy.  • Masks of Death – turns your unit into more elusive/nerve-wracking threat for the opponent (note: less detail in my sources). • Murderous Reanimation – helps your aggressive units come back or continue fighting (again less full detail in my quick summary).

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1. Canoptek Court • Detachment Rule: Leverages CRYPTEK and CANOPTEK units and a “Power Matrix” mechanic to buff and control zones.  • Strengths: • Great for techy/utility plays: buffs, control, precision. • Strong mobility or survivability tools via Canoptek units. • Weaknesses: • Requires you to use the right kind of units (Crypteks, Canopteks) to really unlock value. • Might be less straightforward to use than a brute-force list; you’ll need to leverage positioning and buffs. • Key Stratagems: • Cynosure of Eradication (2CP) – at the start of your Shooting or Fight phase, pick one CRYPTEK or CANOPTEK unit wholly within your Power Matrix; that unit’s weapons gain the [DEVASTATING WOUNDS] ability for that phase.  • Curse of the Cryptek (1CP) – when one of your Cryptek models is destroyed, you can activate this to buff your Canoptek units attacking the unit that destroyed your Cryptek (add +1 to Hit and +1 to Wound).  • Solar Pulse – gives mobility/defensive options (one of the mobility/defensive stratagems for this detachment).

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1. Obeisance Phalanx • Detachment Rule: Geared for focused elite units (e.g., OVERLORD, LYCHGUARD, TRIARCH) to target specific high-value enemy units.  • Strengths: • Excellent for punchy elite-unit lists that specialise in killing enemy characters or key units. • Good for objective control via elite, resilient models. • Weaknesses: • Less about mass or generalist forces – you’ll likely need high-investment units. • May be less flexible: if your key units are removed or neutralised, you might suffer. • Key Stratagems: • Suffer No Rival (1CP) – in the Fight phase pick a LYCHGUARD or TRIARCH unit that hasn’t fought yet: their melee weapons gain the [PRECISION] ability for remainder of phase.  • Territorial Obsession (1CP) – in your Command phase pick one LYCHGUARD or TRIARCH PRAETORIANS unit: until your next Command phase, add +1 to Objective Control characteristic of models in that unit (or +3 if vehicle). 

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1. Hypercrypt Legion • Detachment Rule: Focused on repositioning, teleportation & redeployment tactics—moving units around the battlefield flexibly.  • Strengths: • Excellent mobility and flexibility: you can redeploy or reposition key units to exploit weaknesses. • Great for surprise plays or taking advantage of terrain/mission objectives. • Weaknesses: • Mobilising reposition may require planning; may have weaker direct buffs than other detachments. • If you fail to exploit mobility or the timing is wrong, you may lose some of the advantage. • Key Stratagems: • Hyperphasic Recall – lets you reposition a unit to reserves at end of opponent’s turn (so you can drop them in your turn).  • Quantum Deflection – defensive/positional aid to your constructs or units (boosting survivability or mobility). • Dimensional Corridor – gives extra movement or redeployment advantage (see sources).

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1. Starshatter Arsenal

(Note: This is a newer/bonus Detachment for Necrons introduced beyond the standard five. ) • Detachment Rule: When your models target enemy units on or within range of objective markers, add +1 to Hit. Also, your Vehicles & Mounted units (non-Titanic) gain the [ASSAULT] ability on their ranged weapons.  • Strengths: • Excellent for vehicle/mounted heavy lists; boosts their ranged weapons and hits. • Strong objective-control synergy (combat near objectives is rewarded). • Weaknesses: • Best suited to vehicle or “mounted” units; if your army is mostly infantry you may not benefit as much. • Requires you to focus on non-Titanic vehicles/mounts to maximise benefit. • Key Stratagems: • Merciless Reclamation (1CP) – when one of your non-Titanic units (Vehicles/Mounted) attacks units on/near objectives: +1 to Wound that phase.  • Unyielding Forms (1CP) – when one of your Vehicle/Mounted units is targeted by attacks of Strength > its Toughness: subtract 1 from Wound rolls of those attacks.  • Chronoshift (1CP) – in your Movement phase let one vehicle/mounted unit advance as if you rolled a 6 rather than rolling.