[2020] A lot of missing sounds

Please double-check that all the volume sliders in the Audio Options menu are set to 100% on.

If that doesn't work then check your Windows sound settings to make sure you have everything hooked up correctly.  Also, in Options->Sound check to make sure the audio output device is the correct one for your system.

If trying the above does not work then try this:

1. On the Warframe launcher, click the little gear icon on the top right.  In the Download Cache section hit "Verify" and "Optimize".

2. If that doesn't work then please try re-installing the game.

Let us know if any of these solutions work.