Walljumps
WJs in RIK can be a little
difficult to get used to.
What you need to do is
simply to hold the right
mouse button while close to
a wall, and then press the
jump key in order to do a walljump.

You need some speed (120+) to 
actually be able to walljump.

The walljump is relative to 
how you hit the wall,
and how it acts afterwards
can depend on what keys you're 
holding, for example holding 
D while jumping off
a wall to your right, will
often slow you down.