Your hero will have to rely on handouts in this challenge. Once the hero's starting coin runs out, the only coin generated in the level is the coin that drops with each wave--no coin from combos, kills, or abilities. Don't forget to pick up coin!
Can you defeat this challenge with the available heroes -- Hogarth, Blackpaw, and Smolder?
If you're having difficulty, check out these two player guides for solo and 3-player strategies.
Solo Strategy
https://www.youtube.com/watch?v=Ywou1qM15VY
Group Strategy
https://www.youtube.com/watch?v=3tZjoRFc4r8
Have a totally different strategy? Tell us in the comments!