Good, but Unbalanced
I really enjoyed this game, and have played it at least 4 times. However, even playing on Noob (which insults my gamer dignity), I have not been able to complete the second goal. The linear increase in damage output, matched with the geometrical cost increases of buildings, as well as the incredible damage dealt by any bombs that make it through defense makes the game incredibly difficult or perhaps impossible to defeat. Salvaging was one of the most important researches, as it doubles your bounty, and highly outstrips your income from mines in later stages.
Beautiful game, and quite fun. The regular taunts from Evillax were amusing. It would be nice to place structures on the zoomed out screen, because it feels cramped and crowded with the menus and pop-up screens.
Highly enjoyable, even if I can't even beat it on Noob.