For those who want to find the hidden button: On the main menu, select "Credits"; at the top of the parchment, it says "Game Credits"; clicking "Game Credits" will give you the achievement.
And we go from being laughably easy to frustratingly difficult in level 8, with unblockable squares, deadly edges, AND two enemy lasers. That's annoying.
Why do the instructions say to navigate the blue laser and avoid red lasers, and then we're given control of a red laser? And why do we score more for taking longer to finish a level?
To all the elitist art-freaks that bash the people for voting low because they have poor taste, I would advise you to re-examine yourselves. You are easily won over by pretty graphics and a bland, overly sentimental story, and refuse to acknowledge that by all accounts that this is a terrible game. It is acceptable for games to keep you restricted to a specific role. However, it is NOT acceptable to give the player a long list of tasks, which must be done in exact order, to shepherd him into the same, inevitable ending. Are you satisfied with merely following step-by-step instructions to reach the end, without being given the freedom to play as you think the game should be played? No respectable work of "art" presents itself by bashing an obvious message into its viewers. It allows for interpretation. It allows people to interact beyond the normal level of the medium. This is not art. This is pretentious crap.
Pretty bad. There's almost no strategy in upgrading, so it's a pointless mechanic. And you level up so slowly that by the 4th wave, you're completely overwhelmed. And those guys that swoop in out of nowhere are annoying as f*ck.
The difficulty starts hard and never lets up. This wouldn't be so bad if the character was already at maximum skill, but what you have here is a REVERSE difficulty curve. It starts off impossibly difficult and gets easier. That alone is bad enough, but it's been at least 5 playthroughs and I still can't manage to reach the 10th wave. It's just too frustrating to be entertaining.
Agreed with Galador. It's not a test of skill or dexterity, but a test of patience and luck. In fact, that pretty much sums up the entire game. Most of the solutions cannot be deduced at by looking at the level, so you just have to keep bumping your way through until you stumble upon them. The gameplay is deeply unsatisfying in that the only way to beat the game is through trial-and-error. That's lousy design. 2/5, only because the visuals and music are half-decent.