Bit glitchy, but overall pretty fun =]
well i found the game rather challenging because instead of playing the game with normal strategy i went straight for the VX specialist, after i beat the game and ended up with the bad ending, forgot to click the screen when it told me to mash the keyboard >..<
A few glitches i noticed is that some of the enemies dont get counted when they invade and also i noticed if i shot down one of the large ships, 7 or 8 others would explode, and they wouldnt always even be close to the ship i shot down. I'm unsure if that intentional or not
All in all the game is pretty fun and can be rather addictive =]
only medal i havent got is the good ending (too lazy to play through again >...>)