I recently started playing this game, and figured out alchemy on my own, however, was never able to purchase any weapons due to flawed orbs of alchemy being required. I finally came to the mission in which I was given nine orbs, and I used 6 of them on a weapon and a shield, leaving me with 3. However, moving on the the next mission, I am required to craft 2 weapons that had recipes that were given the previous mission, yet I am unable to craft both, as I only have enough for one. It requires me to make both weapons to progress onto further missions, and you can not trade the orbs, making it impossible to complete the mission.
Impossible to move on from early stage mission.
Read Dibsville's post. There are no places where it's impossible to move on except the actual end of the game. Just run around the Arcade or low level missions and you can find the orbs in treasure boxes (do it on Elite though, otherwise they'll have an extremely low drop rate and will be almost impossible to find). You can also buy them, either in the auction house, Supply Depot, or from other players. If you're lucky, there might be a player with a few unbound ones who can give them to you for a lower price than in the auction house (there won't always be one though), or if you're REALLY lucky, for free. Don't hope for someone to give you orbs for free though, usually people won't do that.
Wait, people usually won't do what? Randomly mail out Flawed Orbs? Of course they do!
Alternatively, you can just buy the those 2 weapons directly instead of crafting them.
Hey! This should probably be in the "New Recruits" section of the forums, you can change it by selecting the "Edit" button and changing the sub-forum from the dropdown menu under "Forum: --General Discussion".
As for your concerns, you can get Orbs of Alchemy as very rare random drops from Treasure Boxes in the Clockworks, with higher difficulties having a higher chance of yielding Orbs; as early as you are currently, you might be better off just resetting your Knight and speedrunning back to your current mission and making the items. Alternatively, you can check the Auction House in the Haven Town Square and try buying one of the items that you need for a low price, if you have enough Crowns. You can also buy the Orbs directly from the Supply Depot, although you need ten Energy for this and you can only buy Energy in intervals of 100, and 100 Energy currently costs around 9000 Crowns, so it's not the best idea. If all else fails, message me in-game and I'll see about getting the weapon you need for you so you can keep going, but you shouldn't have any troubles. Hope it works out for you.