I have just finished implementing the majority of the achievements for Defender 3D. These range from kill amount achievements to wave survival. Plus as you will have already seen the Steam leader boards are live and working well.
If you look at the Defender 3D page (from the left game list on Steam) you will see the full list of achievements currently implemented and what is expected to get these achievements. As the Defender 3D description says, these will not be hand outs; you need to earn them. Some of the achievements will not be completed by everyone.
I have also been working on game meta for bosses and general alien crafts to help make the game more fair to play. This will also give you the player a smoother learning curve (people where complaining the game was initially too hard when you first jump in. Not so now :) )
I have also added a new progress bar right next to the Streaks display. This will show you how far you have to go to the next Wave.
Moving forward to release on the 1st of November, I will be adding 2 brand new Bosses which will make for total of 5 Bosses on release. I will post pics and details about these in the coming weeks.