Will I get my retainer back? - short answer is you will, but from KNC

The retainer is non-refundable to our firm, however, you will be awarded your legal costs against KNC when you win, per swedish laws.

For example:

You bought a titan for $10,131.80. Paid $1,519.77 in legal costs (the retainer). You were awarded $12,000 in damages plus the $1,519.77 you paid in legal costs. You will then be able to recuperate your legal costs back from KnC.