I've made an tutorial based on my approach to enemies in my Metroid Remake extending Phaser.Sprite into a generic Enemy class which in turn is extended to create actual enemies. The tutorial uses ES6/ES2015 but the approach could be used with ES5 (which the my code is actually transpiled to). It's my first tutorial ever. Both positive and (constructive) negative feedback is appreciated. Let me know if you find something you disagree with in my approach, or ways to improve it. Also, English