So far, I've thoroughly enjoyed playing
Gladius: Relics of War with all factions, and although the
Imperial Guard remains my favorite, Chaos has probably been the most fun so far. Since there isn't a lot of documentation out there on Chaos in Gladius, I thought I'd jot down a few thoughts and go through the various units.
Chaos Basics
To be very brief, Chaos plays like a more mêlée-oriented and expansionist Space Marines, with less vehicles but more special rules.
You start the game with two kinds of units: Chaos Space Marines and Chaos Cultists. The Chaos Marines are effectively the same as loyalist Tactical Marines, but like most of your infantry, they have the Champion of Chaos trait. This means that whenever they destroy an enemy unit, they can gain a Boon. These are unlocked in the research tree: they're temporary bonuses to the unit, or at higher levels, permanent bonuses. There's also a very small chance that the unit will turn into a Daemon Prince - or a Chaos Spawn! You can also give most infantry Marks of Chaos once you research them; they're small permanent bonuses that can later be augmented by Icons.
The Cultists are the same unit as the neutrals you'll have encountered a million times if you've played any other faction. As a player unit, they're about as useful as Guardsmen and their flashlights, but with one key difference: they found new cities. Because they're cheap and available from Turn 1, this means you can expand obscenely quickly. If you've ever listened to any heavy metal at all, you can also easily come up with an infinite variety of city names. I don't think you can do Civ-style infinite urban sprawl in Gladius (although I've never tried it!), but building a second city fairly quickly seems like good practice. It's worth noting that whereas loyalist Marines simplify the game's economy quite a bit, Chaos uses all the various resources, so new cities are also very attractive if they can offset a resource shortage in your capital. Because Chaos has lots of high-quality infantry, food is important. Just remember to watch your cities' loyalty!
A final point regarding cities is rituals. They can be triggered in the city view, and involve sacrificing a unit of population to gain production bonuses. Always do this when a city hits its population cap! The quest will walk you through researching and using these.
The faction quest, by the way, is all right. Be aware that completing the bit that tells you to move a Daemon Prince to a certain hex locks you into the quest finale.
Cast of Characters
Like the other factions, Chaos gets three hero units, and they're all quite good.
The
Chaos Lord is apparently based on
the guy from
Blackstone Fortress, seeing as how he has a thunder hammer and everything. The Chaos Lord doesn't have a lot of hit points to start with, but their close combat attack is devastating; once they get kitted out at a Jokaero outpost and get some levels in their damage reduction ability, they can start performing a similar function to the loyalists' Terminator Chaplain: tanking ridiculous amounts of damage and simply destroying the enemy in close combat. An invaluable unit that I think you should build as fast as possible; if you take a little care to get them leveled up, they are amazing.
The
Master of Possession is like a Chaos Librarian, I guess? I'm not familiar with all these innovations. What they do in the game is buff your other units, and their special ability summons a random demonic unit for a couple of turns. A pack of throwaway Warp Talons always comes in handy!
The third character is the
Warpsmith, who repairs units and boosts your economy. They have a special attack that's called Mechadendrites, but is confusingly a ranged melta attack? But it's very good against vehicles.
Oh, and then there are Daemon Princes, who I haven't really used. I built the one required for the faction quest, and the abilities looked kinda weird.
Infantry
Chaos has an embarassment of riches when it comes to infantry. I already mentioned the Chaos Space Marines you can build from the start; they're excellent basic infantry in the early game, and with stuff like melta bombs, Marks and so on, they can still be useful later on. However, you'll quickly get access to specialist infantry, namely Berzerkers and Havocs. Berzerkers are obviously close combat specialists, and while they will absolutely destroy non-mêlée infantry, they can also be surprisingly vulnerable. Havocs are basically the same as loyalist Devastator Marines: they pack a hell of a punch at range, but need to be protected from enemy assault troops and vehicles. As with Imperial Guard heavy weapon teams and loyalist Devastators, if you level them up succesfully, they are superb.
The other infantry units are Warp Talons and Obliterators. The first I've only used as disposable summoned units courtesy of my Master of Possession, and I wasn't that thrilled with them; they're basically Assault Marines. Like a lot of other people, I was quite disappointed that we didn't get Chaos Terminators (especially since they featured so prominently in the art!), but I suppose I have to admit that Obliterators fill their role. They're tough, they have power fists, and their shooting cycles between assault cannons and heavy flamers, which can be a little bit annoying at times, but given that their role is to get in the enemy's face and punch it, they make good use of both. Excellent frontline troops for the later game.
Also I'd be remiss if I didn't mention everyone's favorite gribblies: the Chaos Spawn! They're Chaos's fast recon unit, and you never have to build them: you get a free unit from the faction quest, and your Master of Possession gets an ability where they can turn enemy units they kill into Spawn. Like comparable units in other factions, they're useful in the early game, but struggle to hold their own against more advanced units. Then again, you got them for free, so who cares?
Vehicles
I have to admit straight up that I haven't used some of the vehicles at all, starting with the Rhino. Rhinos full of Berzerkers is an honorable tradition, to be sure, and you can research Dirge Casters which let them nullify Overwatch, but I haven't tried it. The same goes for the Venomcrawler, which is an innovation I disapprove of anyway. It also seems very similar to the Maulerfiend, which you can research earlier. I built a few and my Master of Possession summoned one; they didn't get a lot done and felt a bit fragile.
Luckily you can get
Helbrütes Chaos Dreadnoughts fairly early on, and they're worth it, too. The Reaper autocannon isn't great, but the dread can take some damage and get stuff done in close combat as well. The problem is that if it takes enough damage, it goes into Fire Frenzy where frankly, its shooting is still kinda useless, but it also won't move. I feel like they could have done better with this mechanic, as it usually just leads to the dread being destroyed. It's still a decent unit in the sort of of early-mid game.
Ideally, you want to replace it with the enemy crab, our good friend the Defiler. Another weird loadout, as it has a battlecannon and lascannon which are Range 3, and power fist equivalents for close combat. It's the closest thing Chaos has to a proper tank, though, unless you buy the Assault Pack to get Land Raiders (I did). Deffy is the opposite of the Dreadnought in that it has proper shooting and a bonus close combat ability, and I've found them very useful.
Finally, the Chaos flyer is the Heldrake, which is surprisingly tough and quite strong against enemy flyers. Delightfully, your Master of Possession will sometimes summon one; because it's actually quite resilient, a temporary Heldrake makes for a great blocking unit to annoy and slow down your opponent. I'm still mystified there isn't a Chaos bomber.
**
That's it, I guess! I've found playing Chaos to be great fun, so I highly recommend getting the DLC. Remember to give everyone Marks and Icons, trigger the city rituals when they reach their population caps and look after your Lords and Havocs. I've beaten the game with Chaos several times now, so I'm going to up the difficulty level and see what I can get done. I may also need to get myself a Defiler...
I should say that I'm absolutely delighted that the Assault Pack added the Land Raider for Chaos. I hope there are more DLCs coming, because I'd definitely like to see some demons! Still, though, I feel like I need to repeat myself: Gladius is just a tremendously good game in general, and one of the best Warhammer video games ever.