Crypt of the NecroDancer

The daily challenge is identical to Cadence's "All Zones Mode," but it's the same for everyone that day, and you only get one shot at it. You'll need to complete the whole thing and kill Dead Ringer and the Necrodancer in one try. See my Zone 4 guide for tips:

One tip is to look on youtube or twitch, and see if you can find a video of someone playing the challenge that day. That can be a big advantage as you'll know where the exit stairs are, what items you can get, etc. If you can't find a video, you may want to use a second gamertag to explore and practice the daily challenge before trying it on your main account. You could even record the gameplay to watch back and study. For instance, maybe level 3 has an Urn, so you'll know to save all your bombs until you get there.

I recommend warming up by playing All Zones Mode first, then play the Daily Challenge and take it slow.