wasd & mouse - move/look
left mouse - throw bolt
e - interact/pick up
z - zoom view
tab - inventory

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vehicle:
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ws - increase/decrease acceleration
ad - turn left/turn right
space - ascend
left shift/control - descend
e - exit vehicle
left mouse - toggle lights
right mouse - toggle zoom

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other:
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F5 - toggle full-screen
F1 - toggle shadows (off by default)
F2 - toggle anti-aliasing (off by default)