I've been playing a lot of the KF2 beta recently and I've been working on my seasonal challenges. However, I completed the 25 waves of endless challenge on Monster ball and killed myself to end the game quickly. After that my game wouldn't respond during the loading screen and my PC froze so I had to restart. I logged back on to find that I kept the vault dosh and XP earned from my game but had not completed the challenge. I don't know what to do so I'm wondering if someone could point me in a direction to get some help.