I think the issues with playing it are more related to server issues and network traffic than browser. I've loaded the game up a handful of times with Canary and had vastly different experiences each time, from horribly slow loading problems, to the game running very quickly with minimal loading, to the game refusing to even launch due to errors.

It seems to just be a generally very rough and unpolished game though, and I don't see it lasting long at all. Combat is janky as hell, damage numbers don't line up or make sense, health bars don't update correctly, enemies "die" and disappear without actually being at 0 health and still require attacks on invisible entities to finish off, enemies get pushed way off the screen breaking animations, etc. etc.

Ignoring those mostly cosmetic issues though it does seem like the type of game I'd like to play. I can't right now though, it wont start, and I imagine the myriad of issues will quickly kill any interest people have in it. I'm certainly not going to spend any money on something in this state, doesn't seem like a good investment.