That's an amazing game! I liked it a lot! You did a great job while doing this. We have a lack of small and simple yet so engaging strategy games like this.
I've encountered a bug in the hub: after I got tank class, whenever I move mouse in the formation menu all the music and SFX start to glitch. Might be HTML-side problem, though you only know.
I liked how characters do not attack while the enemy still exists, but actually move on attacking next foe if their previous target is going to die. That's very smart. I also liked the small detail you put in every victory: fireworks! Such a tiny thing, yet so funny
If you release its sequel as a real whole game, I'll be one of your first fans. Great job!