Hey everyone.
I'll be releasing an update in the next few days that introduces a series of new level templates; These should help to make each game even more random.
These levels will have a combination of single, double or triple wave spawner nodes, making some of these levels fairly hard.
In the future as the game expand I'll be introducing a new way for the game to better select 'harder' levels as the game progresses, including new difficulty specific adjustments.
Thanks guys