The next step would be to try LÖVE's official interpreter [1] and see that it runs. That app & the docs are actually all you need to develop a full application right on your mobile phone. You could fetch Hexpress's source code and put it on the /sdcard/lovegame and the official LÖVE interpreter should run it fine, just with more latency.
If you'd like to pursue this further, please reach out on GitHub issues.