I agree legendary solo are generally way too hard.. I am sure it is possible to do any legendary co-op, which assumes your friends are available to play with you ( a problem when they are off playing festival related shenanigans on other games) , but for solo it can be neigh on impossible even using the standard legendary techniques. The AI spams out way too many enemies towards your settlement early on to even get slightly established and even when you have for example Marion Christmas edition spams out balistas which basically take out any turtling benefit you had and it is pretty hard to get the walls up, get the economy to a healthy level, and pump out anti-siege (where the requirement is a champion infantry 1200 gold at golden age) in under 5 minutes? Even with legendary/epic gear, consumables, this is off the spectrum hard ... I managed to solo some of the legendary quests in the summer event, which were pretty hard to beat too but not impossible, why do the winter legendaries seem so unbalanced this time round for solo? If the answer is to co-op always, then that is tricky because you can't always guarantee that someone who is able to co-op to a legendary level is available to help out or that they won't prefer to play with someone they are 100% sure they can beat the map with as these maps tend to take quite a while to complete even if on a timer. Games should be hard but ultimately not frustrating otherwise people will just disengage for other games that have a workable balance between challenging and enjoyable.