A short and simple video with some essential information about how to climb. The "TL;DW" summary is that (1) you must play a lot to get better, especially in low ranks; (2) playing a lot to get better eventually isn't enough, and you need to practice specific things.
Speakeasy's challenges are PVE (player versus environment) challenges intended to help you get better at certain heroes and certain aspects of the game. Speakeasy provides detailed guides for settings on your custom games, what bots to run, and what exactly you are trying to accomplish in completing the challenge. Speakeasy's challenges are indeed challenging, and you may find them an excellent way to increase your Overwatch skill.
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