Marksman. Honestly do I really need to explain further? They use bows and arrows, long barreled guns, or small barreled guns, either works really, because their keypoint is accurate death from a distance, and usually without you knowing it. As I'm sure you've already guessed, each race and region uses different weapons and equipment. Here in Armetisia for example, we find ourselves using our mana drives to operate our firearms, and we don't shoot those ever so crude lead, brass, and copper projectiles, but quartz like bullets, and almost everyone can use them. However, they do run out, and aren't quiet, not one damn bit, sucks if you're one of those stealthy types, or simply don't have the mana or energy drive of an average mortal. For those type of peoples, we got the basic firearm and the even more basic bow and arrows. With the bow and arrow, which is a hella lot more common then you think, one can manipulate the arrow to do something when it hits it's target, like explode, poison, freeze, cool stuff like that, all via magick. The reason you can't do this with a firearm or a Quatzarm is because the rocks we use can attune to only one type of energy and in a bullet you would have to attune every, single, grain of black powder, on top of the bullet, and every part of the gun, so simply put that shit just wouldn't work, take too much energy, and you'll exhaust yourself. Hence why bows and arrows are still in heavy use, especially for the stealth-preffered Walker.
There are multiple types of projectile based weaponry, and as such here is a short list of them.
Quartz Arms - The weapons were developed by Armetisia for the standard foot soldier. To Armetisia a swordsmen, or anything that doesn't use a firearm of something special and reserved for advanced uses. As such, the standard Armetisian footsoldier uses short blades in addition with a Quartz Arm, which is a firearm that fires a small quartz like projectile that holds about 30 shots and has an effective range of 120 meters.
Basic Gun Weapon - Crude but effective best describes these things. They use black powder powered prjectiles and have brass, steel, or lead tips. They're effective range is incredible, but cannot be magically attuned because to do so every grain of black powder within the bullet would have to be attuned, then the bullet itself, and that takes entirely too much mana. Granted it isn't impossible, but it is very difficult and time consuming.
Long Barrels - These weapons can be either quartz arms or guns, but they are never used for short range operations. These are sniping weapons, and as such are used from far away either for military operations or for assassinations, and most models can easily crack armor and knock down bigger targets with relative ease.
Short Barrels - Again, either a gun or a qaurtz arm, but are hand held and can be duel wielded. Not as strong as a rifle, and clearly far from the strength of a long barrel, but can be easily concealed, and works well at close ranges.
Bows And Arrows - Primitive right? Used by savages right? Yea, sure, if by primitive you mean easily assembled and carried and by savage you mean that one guy you don't want to piss off. They may be simply but the are the most easily magically attuned projectile weapon. Simply pour some mana into the arrowhead, say a spell, release. Their ranges vary based on the size and make of the bow, and all makes and models can be used in both short and long range battles, making them extremely effective even with the magic-machinery advances made in the recent years.