there a huge amount of weapons list compare to other fps game, so below let me list out the suggestion to each map and the reason to use the weapon, not forcing you but just the idea, below are the weapon list.

weapons list

• Primary
  
• Backup(pistol)
  
• Melee
  
• Special(fire thrower)
  
• Snipe
  
• Heavy(rocket)

already set

• Snipe fort(sniper)
  
• Knife party(melee)

Close range

• Arabian Dust(primary, special):remake from CS classical dust 2 map but only half of it's size, it own a huge choke point, the key point are holding this point then push back enemy force, rocket could seize the choke point which work effectively.
  
• Classical pool(special): must be the most small thought out whole game,
  
• Nuclear city(special):like fallout 4 begin town, you gonna walking around then chase down enemy like cat and mouse game, flame thrower are true killer weapon in this map.

Middle range

• Bloggers arena(snipe, primary): it's a really complex map, that allow multiple way to approach enemy side or use it as defense.
  
• Scarab temple(primary):there are high ground so there are two main route way to enter the battle, it's really allow brave action like gank from high place became possible, secure the high ground also provide vision to all place map so you could control the battle info.
  
• Ghost town(primary): a pretty complex environment, need to careful all side since there not much safe spot thought out this map, every move is possible in this map.
  
• White house(primary, special): a long route in middle place and scatter around small room place, it's not huge map but pretty complex space, so you need to scatter around to found enemy, headphone are the key to win in this map, when you hear enemy approach then counter them or gank them by surround.

Long range

• Parkour city 3021(snipe, primary): must be the large map thought out whole game, really need to stay focus to aware all surround gank of snipe, need really good coop with teammate, there car traffic below map which are really cool detail.
  
• Paradise resort(snipe): a beach which is really huge, there no obstacle or wall in the large space, so snipe became a really to op weapon compare to other weapon, still if you gank to two side you could take down camping enemy easy.
  
• Ant life(snipe):like toys story movie map like, it's really huge so only the snipe could work though.
  
• Sky island(primary, snipe):it pretty obvious map, two main route and only thought out the bridge, it's really risk to go in deep in this map so camping snipe work pretty well in here.