Sorry about the text wall, just wanted to dispense an idea and a set of facts. Idea for 'hybrid classes': These may also include small Hard-light shields in certain areas to designate 'emblems', etc, and may have slightly more confusing attack patterns due to hybridization (Lancer Sniper slipspacing behind and sniping you, for example). Default Knight. > Knight with Commander head if 'Captain', has Lancer sword > Knight with Wagon head and Engines if 'Kill-Team', has altered sword to fit subclass. Lancer > [See previous] Wagon > Default head if 'Support' (can use other species guns), if also having Knight Commander 'back-flames' and head 'flames', is a 'Honor Guard Executor', sword can double as shield if Watcher is docked. Commander > If it has Wagon head and shield-blade, is an 'Honor Guard'. If bigger than others, with Wagon Engines, and a mixed blade (Lancer curve + sharp Wagon tip + long start, also applies a bayonet to the weapon it holds), is a 'General'. For convenience: 1: Weapon setups: Knights: Default (Suppressor, LR, Scatter (rare) ), Lancer (LR, Suppressor (not common), Binary ), Battlewagon (Scattershot, Incineration Cannon (uncommon), Commander (LR, Incineration Cannon). 2: The Prometheans are, in fact, based on chess pieces. Pawns (Crawlers), Watchers (Bishops), Knights (same), Rooks (unknown), King (unknown, possibly a large tank-ish sort of unit), Queen (Possibly a Vulture (Halo Wars) -like unit), [UNNAMED] (probably that giant War Sphinx-like unit seen in the Guardians Teaser).
Each weapon is unique: Incinerator Cannon, Light Rifle, Scattershot, Suppressor, Boltshot, and Binary Rifle. The strongest Forerunner gun is the Incinerator Cannon, but it can be unreliable at times, so I usually use the Suppressor. I hope that in the future, cooler Forerunner guns are introduced.
btw, KNIGHT is actually just the name of the Promethean variant. It changes it's form depending on what weapon it has equipped. It might take on it's normal form when it's wielding the Boltshot (it MIGHT, but it's TBC. It might take on it's normal form when wielding the Suppressor, too), it takes on the Commander form when it is wielding the Incinerator Cannon, it takes on the form of Battlewagon when it is wielding the Light Rifle, and it takes on the form of Lancer when it is wielding either the Scattershot or the Suppressor.
Sorry for responding months after the fact, but no one responded to you that I know of.
Think of it like this, the Light Rifle is a Pulse Rifle. The Suppressor is a Pulse Carbine. The Scattershot is a Pulse shotgun (doesn't exist, but yeah). Boltshot is a Pulse pistol with a charge shot that does more damage. The Binary rifle is a compact lascannon, and the Incineration cannon is a blast lascannon. Both the Binary rifle and Incineration cannon ignore invuln saves.
This isn't an exact translation of course, but that's the gist of it.