The "spiders" aren't that big a problem.  I usually crouch and kill them
with the crowbar.  And the pool(s?) in the tunnels right before the cliff
is a healing pool, so once you've killed the nearby spiders, you can relax
in the pool and restore your health.

The telnorp was in the domed structure in the open area right before the
tunnel, where there were some ninja babes and where you broke a metal gate
to get into the tunnels.  The dome should not be difficult to break.  One
or two shots should do it, or a nearby grenade explosion.  I'm pretty sure
that if the teleport ball is waiting for you, the telnorp was freed.  You
don't collect it or anything.  It just flies off and teleports itself away.

You should just need to make that jump into the teleport ball.  The jump
may be a bit tricky, but it's not too bad once you get the hang of it.

James