Thank you so much mate! :)
Yeah that's completely understanable, I was playing around the last day with some timing and made it so that the spawning starts a bit slower and gets faster in about 20-30 sec period, but yeah it's a lot to take in at first at least if you haven't played too much VS style games. Balancing is one hell of an artform to perfect! Would need a lot more playtesting and from a large variety of players who have and have not played the kind of game you're making.
I will play it straightaway now that I got time mate :) I try to give always an honest but fair feedback, don't want to trash anyone, because you never no if it's someones first game and you just discourage them from ever making a game again! :)