I've put together a short list of the sounds we need for release and don't currently have. If I have missed anything, please edit the list or post a comment.

Blast1 - for small explosions
Blast2 - medium  explosions
Breath - for DeepBreath() callback in Clonk
Clonk - Sound for lorry collection
Connect - Sound for cable-reel and other such line tools (ie: dynamite box)
CrystalHit* - Sound for ice/sulphur hitting the landscape
Earthquake* - For the earthquake disaster
Fire - Looping sound for burning objects
Fuse - Looping burn sound for dynamite and dynamite box's fuse line
Grab - general sound for grab/put into containers.
Incinerate - to play on incineration of large objects (ie: tree, structure)
MetalHit* - for metal objects hitting landscape
Munch - when the clonk eats something
Splash1 - for small objects entering water (ie: material chunks, fish)
Splash2 - for larger objects entering water (ie: clonk, barrel)
SwingHeavy* - for swinging a club/giant hammer
SwingSword* - for swinging a sword
Thunder* - delayed sound for lightning
WoodHit* - for wooden objects hitting landscape

Other sounds I would suggest would be environmental effects, because currently scenarios sound very empty.