No missable achievements (plus 38 unknown)
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Change avatar (1st time)
Change avatar 25 times
Take first screenshot
Change avatar 50 times
Spend 60 minutes with no face detected
Use 10 backgrounds
Use 10 props
Broadcast for 240 minutes
Use Live2D avatars more than 30 times
Create and save an overlay layout
Change avatar 100 times
Use all the canidae avatars
Use lipsync for 300 minutes
Export a performance
Load workshop/custom items 30 times
Use pupeteering
Reset to default 20 times
360 Rotate an avatar in a background
Use all TF2 avatars
Use voice effects for 120 minutes
Customize 10 backgrounds
Add 5 props to a single avatar
Run FaceRig 100 times
Export a Gif
Use all the feline avatars
Load video as input source
Customize 20 avatars
Hold the avatar's tongue out for 30 minutes
Play with the avatar's hands (special actions or through multi-sensor update) for 30 minutes
Record 30 performances
Take 50 screenshots
Share a photo to Facebook
Use all scary avatars
Use all fluffy avatars
Export more than 60 minutes worth of movies
Play performance for 60 minutes
Use a karaoke audio and text file
Play karaoke for more than 120 minutes