TimeSplitters 2 - XBOX

Any hints on completing the Siberia level with 2 people?

We have good success to the first checkpoint but coming back out
and getting to the top of the dam is really hard. Don't last long
either on the top of the dam.

Also, the manual mentions a respawn button but this did not
seem to work. Going back to the only checkpoint is a real drag
after a few dozen attempts.