Survive endless hordes in Arcade mode, or battle boss rounds in campaign mode. Gather weapon power-ups to take the fight to the enemy. Fight a vast array of enemies, with varying AI to keep the battle interesting.
We have done some extra work to improve upon the current setup and game play itself. Currently it is in internal play testing to make sure there are no bugs or problems, this was testing very thoroughly before but with the changes we just want to make sure there are no outstanding problems. We may end up adding to the game after release, but we will at least fix any problems that are found. If everything goes as planned we are hoping for a release on 4/14/13.