I am baffled by this book. 150 pages into it and it still doesn't seem to be going anywhere. The plot (if there is one) meanders all over the place. Most of the aliens seem to be slime dripping perverts. The humans have no personality to speak of. The prose style is prolix, stilted and florid, like some 1930s pulp fantasy writer (not one of the better ones) on dhoor (the addictive drug of choice on the planet with the aforesaid slime dripping toad perverts and the road company Jabba the Hut). I can't recommend this for any reason, and I can't see how or why it even got published.
I thought it was quite good but you have to have read the first book Weird Space: The Devil's Nebula first! How can our heroes defeat these interdimensional invaders is anyone's guess. Eric Brown pulls off another great adventure!