This is a re-make of Chaos Fighters for Asia market, the game is pretty fun and requires a lot of strategy in dealing with enemies. And they have plenty of hero selection to choose from but personally if you are a F2P i suggest you focus on getting a tank hero (low stamina ration eg 6 stamina = 1 hp). For people who can spend well you can pretty much customize but personally i like speed characters, although the current meta is tank build with damage over time skilsl to counter speed heroes.

I am currently on server S10 - Aquarios, pop by if you want to try out the game. Sorry i dont have much info but you can check out the wikia link

http://chaosfighters.wikia.com/wiki/Chaos_Fighters_Wiki

i kind of stop playing the game haha...i have too many things to do so i need to cut down on distractions