@Tman suggested I post some thoughts on here on a TD game I played called Last Hope. It’s got a zombies vs Native Americans theme that I liked, although on the whole I didn’t find the game otherwise particularly innovative. But it was solid enough to scratch the TD itch. And getting all the achievements is attainable, it is one of two perfect games for me on Steam (the other curiously enough is Dungeon Warfare).
The graphics are…weird. Like 3D from 2002, but on my modest PC it ran pretty well. And it appears to be converted from a free to play format where research used to take time and you had to keep coming back to check on others. Now you just grind for money and buy whatever when you have enough.
There’s a variety of towers but you can get through without having to unlock all of them, which may be good or bad depending on your preferences.
Best part of the game for me is the use of the heroes. You get a hero unit to start with that you can level up and also unlock weapons and accessories. You can unlock others during the game and upgrade then as well, and later scenarios allow for multiple heroes to play, and the heroes are probably the avatars you use in multiplayer, though I didn’t go online with this one. It’s a grind to level the heroes but you must as they are critical in adding firepower.
Most of the scenarios are standard fare but I did like a few of the ones that changed things up, where your job is to earn enough money to upgrade troop generators that will send waves of allies at the enemy. There are also arena levels and endless levels.
Defense Grid has tighter execution and gloss but this one was worth a week of entertainment for me.