Unfortunately no one was online when I tried, but I tried the survival mode. It's interesting, it needs some more actions, especially when you stay near the top there are very few enemies. Maybe you could add some spikes there, to encourage players to remain in the middle
that is cool idea. I have some time left, will add it. Maybe less time between enemy spawns too. Thanks for your feedback. :)
About multiplayer. I hope when ratings begin there will be some people... but when I test it with my friend it seams laggy sometimes. I guess going with websockets was a bad idea. I should make standalone build... Too late for that unfortunately :(