Searching for a "Brawlhalla unlock all characters cheat" usually leads to shady corners of the internet. Here is why you must avoid them at all costs:
However, there are several legitimate, fast, and completely legal ways to get access to every Legend in the game. The Legitimate "Unlock All" Option: The All Legends Pack
If you want a guide on through specific game modes?
Every day, you are given a specific challenge (e.g., "Play 2 games as a Legend with Spear" or "Get 3 KOs with Axe"). These missions take very little time and award a substantial amount of Gold upon completion. You can stack up to three missions at a time. 2. Capitalize on Daily Login Bonuses