You'd want Wasteland in play with Env. targets but not Ratmen or Worm.
Have Wasteland remove the Brambles from the game.
Then you want to Keep using DW Expat to keep Akash's heal destroyed and keep whittling down Akash until big shots of "Get out of the Way" and especially a few turns of chaining a few Keep Moving's into all your Energy forms in play then playing "Get out of the way" for some big time damage shots.
With the ability to destroy Allies of the Earth before it heals her you can make it a war of attrition, and at that point it is all about odds of whether Akash can string together the perfect storm before you can win the game.
Strategic management of hand/trash/deck is always key in these games to maximize your ability to recover your best cards and use them frequently.