To merge changes from the feature-twincpu branch back into the master branch, you can use Git to first ensure your local repository is up to date, then switch to the master branch and execute git merge feature-twincpu. This will combine the changes, including any updates to the linker scripts, into the main codebase. Just like merging the latest Null Brawl iPhone features into the game for an improved, enhanced experience, merging the branches ensures that the most recent advancements and fixes are applied to the main project, leading to a smoother and more efficient workflow. After the merge, be sure to test and resolve any conflicts to guarantee a successful integration.