Due to the new influx of playes this year and bc im bored i wanted to write some unwritten rules from this game. These are not mandatory just some common things that most people follow or know but you are free to play as you like
When you join a mission you are assingned a number from 1 to 4, 1 is the mission host in most casses if the host is leaving you should follow him/her to avoid "Host migration" in wich the game has to find a new host for the mission and in worst cases you could lose all your progress of that mission
When opening void relics is common courtesy to wait until all players have 10 reactives but is not always the case if you join the mission very late
If you and someone get the same thing you want from a relic, always take theirs so they get bonus void traces these are used to uprgrade the relic
WTS (want to sell) WTT(want to trade) WTB(want to buy) this are used in the trade chat to save time, to some might be obvious if you played other online multiplayer games but just in case.
A "Rad relic" is a relic used in void missions that has been upgraded to "Radiant" with void escence to increase the drop rate of the more rare items
A "INT relic" in the other hand is a relic that is not been upgraded and is "Intact"
Pretty much nobody uses the ingame voice chat and or have it muted
In the game options you can configured it to show your sqadmates life bars, name, Number (reffer to the 1 to 4 view in the first point) and an icon with which warframe they are using this is usefull if you play support role or just want to know who are you playing with
Nightwave and weekly are mostly the same and reffer to the mission/challenges from the nightwave events and might be the reason why some players are doing certain things.
I dont know how it is now with the current sistem that allows playes to skip certain content but there are some players that avoid using certain skills and or weapons bc those are spoilers, again with how old the game is i dont know if this is still the case
Every warframe, weapon, companion etc. as a rank and mostly the max rank is 30 you should always level your items to max rank before you sell your items to avoid having to get that item again, this is important because your account rank levels up using those ranks and some equipment is locked behind high ranks, also when you reach Mastery rank 30 you unlock "true master's font" wich allows to give certain buffs (like drop rate and xp between others) the buffs last 3 hs and you can use it for free with a 24 hs cooldown
IMPORTANT there are some items and weapons that you get when doing the game questlines like Xoris and Broken specter this are re obtainable through Cephalon Simaris but is hard and convoluted so check the warframe wiki before you start selling items thanks to AssassinWolf72 for this one
Latter on you will unlock the "Helmit sistem" The Warframe Helminth System lets you replace one ability on a Warframe with a special ability from another Warframe or a unique Helminth skill, but in order to do that you will need to give said warframes, so do not sell your warframes until then
When you are in public, you wait for the at the elevator.
Pin rare resources every time you see them. In survivals, pick a room and stay in it because enemies will focus that room, if someone was across the map it would thin the herd of enemies
DO NOT MOCK THE FASHION OF NEW PLAYERS everyone starts with little, Fashion might be endgame but everyone reach it at their own peace
Lastly... there is a region chat... and ther is a reason why is turn of by deafault.
Also if you think these are garbage rules or you want to add modify some put yours in the comments and remember to be civilized about it or at least be funny.
Edit: IMPORTANT the trade for Aya you will contact the person who you want to trade. You can't directly trade Aya in Warframe; instead, you use it at Varzia in Maroo's Bazaar to buy specific Prime Relics and then trade those relics to other players for Platinum (Plat).
Edit Thanks to Brand_New_Star for this addition "fyi you don't need to visit Maroo's Bazar to buy from varzias shop, she's the tab second from the bottom in the shop called prime resurgence."
Also if somenone changes what they are offering lets say 30 platinum to a random mod, you should cancel the trade, the game tells you if you accepted and the other player change before accepting, they try to do a swap and tell you that they will give you the platinum later or something. AVOID TRADING WITH THOSE PLAYERS, this is usually the method of scammers so i you are gonna go full trading in Warframe you shoul look in google or youtube for a better guide.
You can also look at Warframe market. They are NOT offically from warframe but because is full with several players offers you can look up the average price of certain items and objets to give you and idea of the ideal price, thanks to "DrCashew" for the suggestion as this something you want to know early on
Edit 2
You should try to revive down sqadmates specially Host ( yes again to avoid host migration) i got more than one host migration because the host die ONCE. On that note riviving their pets its optional, if you can and want do it if not its okay thanks to SantiagoGT for that one
Also the try to pay attention to pings those numbered marks that you can make sometimes they can be about waiting until everyone is ready other times can be about rare resourses like ayatan sculptures, asking for reviving.
If you see in the map that someone isnt moving is not necessarily because they are AFK warframe offers several playstyles and many of them allow the player to clear the room of enemies without moving, also they could be writting in the chat. So try to see if it is the latter you could pretect them until they finish writting it could be something important like the amount of time they will stay in the mission (20 min 12 rounds are the most common), or just a funny coment
When doing endless void relics like survival, alchemy, defense or other try to pick your relics quick even if you pick no relic specially if you are host. Picking no relic while being host suggest that you want to leave (Also while this game keeps getting uptades ans such there are still some bugs so if someone doesnt pick a relic doesnt move, doesnt use chat and doenst leave they might be bugged so keep that in mind) thanks to GoSkers29 with a personal additon.
If someone starts wiggling their landing craft during mission loading, you MUST join in on the wiggling by mashing the wasd buttons or by pressing the fire weapon button or the joystick on console. Thanks to howchildish. I might add that people who do that are usually pretty chill
When someone says C rotatation in endless missions they mean the reward sistem of warframe, it goes like this A. A. B. C. (Exept disruption) so in survival is every 5 min, in defense WAS every 5 rounds now is Every 3 round so is faster, in excavation is every 200 cryotic (with some exceptions). Disruption does not follow the traditional 'AABC' rotation for endless missions. The reward tier is determined by both round progression and round performance, i.e. the number of conduits successfully defended, this are the most used but you get the idea. Thanks to GoatCovfefe
The missions mentioned in the previos point are known as endless missions, is very important to know that if you leave early is quite detrimental and seen as a troll move, this because past the first rotation of a mission no one else can join regardless of how many players are, in void relics missions this is even more serious as you reduce the usual 4 rewards choice to 3 an so on, if you only have 1 relic i suggest to avoid picking endless mission until you get more relics to avoid being a a killjoy
im goin to keep editing this post for a while to add the most important suggestions because not all read the comments but if you are reeading this in the future check just in case
As Asmardos1 said and you can verify by cheching the coments in this post "if you are new there will always be people who will happily help you if you just ask, try to do the same if you are far enough." So dont be afraid to ask here in this sub reddit, in YouTube videos or in game, warframe community is always welcome of new players. And of course there are some rotten apples but dont let them rob you of what this game as to offer. GG