Thunderblade (Master sys)
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Continue game play
Hold Down/Right and press 2 at the game over screen.
Fortress Tip
When approaching the end of level fortress, move up to either top corner and hover there. The fortress should now blow up without you touching it.
Tank Missile Tip
In the second half of stage one (the city) you can dodge the tanks' missiles by moving in an anti-clockwise square around the edge of the screen.