Good, simple, fun RTS, much like the other 8-bit games in the series. My main issue is that achievements often are bugged and do not register. Retrying the achievement often doesn't work (such as "complete mission X") and the only known solution is to nuke your game save data and try again; you start back at square one: mission 1, no unlocks; and you have to hope that the achievement registers the next time you attempt them. In my case, I don't have the "complete mission 6" achievement for either campaign. Many people report not being able to get other achievements also. Nuking my save data did not work (specifically w.r.t. "complete mission 6") and I won't be attempting any further, given that: I'm nuking all my unlocks each time, and there are a bunch of achievements for: "complete all missions (/ in hard mode)", "get all X achievements" and I cannot trust that there won't be any one achievement that didn't unlock on a particular nuked-save-data run, meaning I'm likely not to get the grouped achievement, after spending many hours trying to get it. IIRC, I didn't have any issues with "8-bit Invaders" which might be a good alternative.
