Added a help dialogue box that triggers based on player actions rather than level progression to teach new players about more complex parts of the game. Because more information is presented in a direct and graphic way, there's less that needs to be explicitly stated in help text (though the encyclopedia is available for anyone who wants to read about every mechanic in detail).
I still need to do some testing once I finish implementing it, and I want to add a few new enemies. But the vast majority of the work is done, so I'm probably releasing this update (1.1.0) tomorrow!