Blender refers to the default game strategy of just maxing your workshop and where you usually rely on orbs killing most enemies and thorns handling elites and bosses. This is opposed to a “Devo” where you do not max everything for various purposes such as hoarding enemies for more coin gain (e.g., Orb Devo Guide for Increased Coin Gain & Progression).
Blender is usually considered the second beginner build for new players - after the Turtle Strategy (early game) build. For many, it will be the go-to build for the next couple of months in the game, while you are working on improving your Workshop and Lab upgrades, farm coins and climb the Tournament ranks.
The Blender Build prioritizes survivability through high Health and Effective HP (eHP) (eHP) rather than Defense Absolute. While initially weaker, it scales significantly with upgrades.
Overall, the broad core summary of the build and strategy is as follows:
A blender build is largely just a “just max everything” approach to the game and its workshops and labs. However, starting out, there are some things that are fairly more important.
Depending on the stage of the game you are in and how many workshop upgrades are purchased, this order might vary a lot, but it's important to balance out several main things: