my honest opinion is to stop developing antaris right now and start something new - something smaller.
dont get me wrong - its a good template game, probably one of the best template games ever, but it wont go beyond that.
i think you waste a lot of time by repeating the steps of making this huge levels and tons of enemies. there is so many little things that others pointed out already, wich look or feel wrong it would be a massive waste of time to produce more levels...
for the future keep things simple, for example make only 2 weapons but make them look and feel good.
