[Update]: Totally Accurate Battle Simulator has just launched from Early Access with multiplayer and new factions!
In a bit of a stark contrast to the previous few patches that added highly thematic factions and units, the new Legacy Faction update has gone all out on the craziness. As such, the new faction sports not only obviously overcompensating spearmen and explosive barrel-riding maniacs, but also a modern tank - because why not!
As for what exactly all of this nonsense looks like in glorious combat, that you can find out through the recently posted teaser trailer. Have a gander, it's about as delightfully wacky as you would expect:
Much like the Secret Faction, most of the units in the new Legacy Faction must be unlocked by finding them on the Legacy Map. Some of them are quite deviously hidden, especially the tank, so be prepared for a bit of a lengthy Easter egg hunt should you decide to undertake this challenge alone. Once you manage to find them all, you'll be rewarded with the full faction and its accompanying campaign, the latter of which should give you a pretty good idea of just what the new units have to offer.
To make things even sweeter, the update has also added a variety of bug fixes and balance changes. So if you're curious about all of the details, or if you just want to dive into TABS for the very first time, you should head on over to Steam to learn more. Have fun!