>>537871289
Spore mine challenge isn't that bad now that they've fixed the bug that made it impossible to get, you just swing heavy attacks in the general direction of them and eventually you get them. Honestly one of my favourite ordeals, it teaches you something about the game both as information and muscle memory, but it takes a reasonable time to get.
Meanwhile you have shit ones like blocking a billion damage with heavy's shield that just takes forever without being a challenge, or the bulwark melee block one that is best done by going into a solo lobby and farming it in a corner because getting it in a real game will take forever and also be a completely useless way to play.