The Assault Squad in 30k Legions is somewhat pricey, but provides the legion player with some much needed rapid response and celeritous threat deployment. With jump packs, standard grenades, bolt pistol and close combat weapon, these are very "standard" troops. But wait: therein is the nice thing: they're troops rather than fast attack. Yes - you read that right, you're not playing Blood Angels in 40k, Legions in 30k take assault squads as troops. Neat!
The other change from standard 40k is also the size. As with the Legion Tactical Squad, the controlling player can select squads that are up to 20 large. Sometimes this is good thing for assault squads, but it depends on the sheer density of terrain you're playing with.
Here are a few sample builds to toy around with.
Legion Assault Squad, 10 strong, all with melta bombs, sergeant with power fist and artificer armour (325 points).
A tank hunter squad. Get there quickly and blow up the tanks. Simple. Effective.
Legion Assault Squad, 15 strong, all with combat shields, sergeant with power fist and artificer armour (395 points).
With an invulnerable save and an effective sergeant, this is a large assault squad - but not so large as to be seriously affected by dense terrain. Take some hand flamers for taste and use as an objective taker?
Legion Assault Squad, 20 strong, 4 hand flamers, sergeant with hand flamer, artificer armour and power fist (475 points)
The objective hunter. Sit on it. Flame anything that charges you. Hope it isn't a contemptor. Take melta bombs just to be sure…!
Legion Assault Squad, 10 strong, 2 plasma pistols, sergeant with thunder hammer, plasma pistol, melta bombs and artificer armour (330 points)
Although the plasma pistol is much maligned, it can still pose a decent threat. The thunder hammer sergeant backs this up in close combat with a third plasma pistol to make this a pseudo-plasma-cide squad that has potential in close combat and can be a light tank threat to boot.