I've not only played it completely through half a dozen times or more, I'm actually the only one I know who had too much time on his hands and was crazy enough to finish the game on nightmare skill, even though the developers themselves said it's impossible. <!-- s;) --><img src="{SMILIES_PATH}/icon_wink.gif" alt=";)" title="Wink" /><!-- s;) --> Well it *is* nearly impossible, as all machines get up from being dead after 8 seconds (at least organic foes don't which makes the first third of the game fairly easy). If you've fought those big badass flying monster-machines in the last couple of maps which can take a lot of punishment, well imagine you barely killed one in maybe 30 secs, you run around the room a bit, killing a couple of acolytes or templars and before you know the big bully is up and running again... but I can testify that nightmare is doable on Strife, you just need good strategies, good reflexes/aim and some patience. Also, you should use the 1.3 (or similar, at any rate the highest official) patch which allows you to save your game to more than one slot, because you might quickly find yourself in a situation where you have to go back to an earlier save game and use a completely different strategy. Yes it matters what weapon you use when and how you juggle your ammo, and even when and what kind of medpacks you buy with the money you got. But if you like a challenge, it's definitely one. <!-- s:) --><img src="{SMILIES_PATH}/icon_smile.gif" alt=":)" title="Smile" /><!-- s:) -->