With any 664/6128 emulator load the .DSK file in the floppy

Example for WINAPE http://www.winape.net
The default configuration is 6128 Plus

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Winape -> File -> Drive A: -> Insert disk
or
Winape -> F2
or
Disk Icon in the bottom of the emulator

Open file -> choose compo2017.dsk

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After pressing F1 (numeric pad 1 with numlock ON) you will get the Basic prompt
Simply type RUN"GAME + <enter> key

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In the introduction screen, press any key after intro + looping scrolltext

In the game, use cursor key to pilot the plane and space key to fire ammo

Notes about the plane behaviour

Cursor acts like the joystick of an airplane

Cursor down will pitch the plane up
Cursor up will pitch the plane down
Cursor left/rigth will roll the plane, the enemy trajectory looks like it's rotating

Like an aircraft, you will be able to pitch up more than pitch down

Shot precisely to hit the target

