Upgrade engine, fuel pickups, helmet and bird density only. Keep spacebar held down for the entire flight and activate helmet once you start passing birds. That's how I won, at least.
There needs to be a way to listen to the game's soundtrack without actually playing it. It gets better as you get closer to losing, but obviously, once you're at that stage, it's not long before you either lose or the level ends.
Call me a pussy, but I'm just not into these 'wanton murder of innocents for no apparent reason' games. While the game was well-designed and simple to play, I personally just didn't find it fun. Don't rate this comment down just because 'he dun liek gore lol', guys.
The swarm towers always targeted missiles after all other enemies had been killed, by which time I had already been hammered by missiles. Set it to target missiles first.
Also, I enjoyed it, but the ending was absolutely ridiculous. The 'scary puzzler' simply descended into a 'fast-paced shooter'. I'll give it 4/5, would have been a 5 if the ending wasn't so stupid.
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