The Legiones Astartes’ heaviest armour rolls forward in plastic. Hot on the tracks of last year’s Fellblade, Games Workshop delivers two more super-heavy additions to The Horus Heresy range: the devastating Falchion Super-Heavy Tank Destroyer and the Spartan Prometheus Assault Tank. We’ve gone through every sprue in detail, so read on for our full review.
The new Legiones Astartes releases will be available for pre-order starting Saturday, 23 May 2025. The pre-order period lasts two weeks, with the official release date set for 6 June 2025.
Falchion Super-Heavy Tank Destroyer review: the Fellblade’s deadlier sibling arrives in plastic
The Falchion super-heavy tank destroyer is the sister variant of the super-heavy Fellblade kit released last year in plastic (my full review here). As with the Fellblade and Glaive, you get an army set-sized box, though this time with 9 rather than 8 sprues (6 large frames and 3 half-sized), an assembly guide, and the A4 Legiones Astartes super-heavy vehicle transfer sheet featuring icons for the Sons of Horus, Imperial Fists, Salamanders, and Iron Warriors alongside generic symbols, though without colour printing. The RRP is £125 / €160 / $210, which is £5 more than the Fellblade, but you do get an extra sprue for your money.
It’s no surprise that the Falchion follows now, as the Fellblade kit was designed for modularity from the outset. The turret sprue is replaced by two new sprues for the mighty neutron-wave cannon, while the rest of the kit is identical.
The two new Falchion-specific sprues:
Patreon bonus content: Ultra high-res, uncompressed versions of these sprue images (and backsides of the sprues) can be downloaded here.
The seven sprues carried over from the Fellblade:
Patreon bonus content: Ultra high-res, uncompressed versions of these sprue images (and backsides of the sprues) can be downloaded here.
The Falchion has no hull armament like the Fellblade and Glaive, but you can still choose between lascannon arrays for the sponsons (this sprue is identical to the sponson sprue from the regular Spartan), with a second sprue offering a pair of laser destroyers and gravis heavy bolter batteries. The rest of the build is identical, meaning the side skirts again consist of multiple parts, though the joins are well hidden save for one small area. The Legiones Astartes vehicle upgrade sprue with its various bits and pintle-mounted weapons is included as always.
Spartan Prometheus Assault Tank review: a familiar hull with a new bite
As with the regular Spartan, you get 6 sprues, an assembly guide, and a black-and-white transfer sheet. The RRP remains unchanged at £74 / €97 / $122.
Modularity is the watchword for the Spartan Prometheus as well. In this variant, the lascannon array sponson sprue from the regular Spartan (also found in identical form in the Fellblade and Falchion) is replaced by the laser destroyers and gravis heavy bolter batteries sprue (also identical to the frame in the Fellblade and Falchion). The sponson armament is the only difference from the regular Spartan; everything else in the box is identical.
The familiar Legiones Astartes vehicle accessories sprue with pintle-mounted weapons and various equipment is included here, too.
Where to get
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I hope you found this review helpful, feel free to leave a reaction or comment below, or post your questions here or discuss on our Discord channel.
9.0 Score
Pros
- Falchion's neutron-wave cannon is a visually commanding centrepiece on the tabletop
- Spartan Prometheus rounds out the Spartan family without a price increase over the standard version
Cons
- Transfer sheet is black-and-white only, without colour printing
Final Verdict
Both kits are exactly what Horus Heresy collectors have come to expect from Games Workshop's super-heavy releases: well-engineered, highly detailed, and smartly modular. The Falchion's neutron-wave cannon makes for a visually striking centrepiece, and the Spartan Prometheus rounds out the Spartan family neatly. If you already own the Fellblade or regular Spaartan, much of this will feel familiar, and that's precisely the point.
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