Game of the week: Protector.
Protector is a tower defense game, like DTD, except the towers gain experience when attacking or killing something, and need experience to be able to level. When a tower levels, you can pick between upgrading it’s special attack and giving it a little more power (specialist), or upgrading its power by a lot (generalist). If you upgrade 5 levels of generalist, you get an extra 1 range added to your tower, and if you max it out as a generalist, you get more speed.
Look at the Protectodex or whatever (accessible from the main menu) for anything related to what the towers do and whatnot.
In this walkthrough, I’ll basically be playing through the game, and posting what works for me. Since all basic towers are the same power-wise if you upgrade them pure generalist, I will take advantage of the specific enemy types in the level to decide which towers to get.
http://www.kongregate.com/games/undefined/protector