As a kid, my neighbors and I would give everyone the Q claw, which is functionally a near infinite range, attaches to almost any surface, grapple hook.
If you hold the button, you can remain suspended/attached... basically where ever.
So, we would go with ... i forget the name, but some twiglight setting, older european town style map..
... and we would just all be zipping around like goddamn spiderman, because you can move so much faster with the q claw than by running...
... that, or camping in some absurd nook of the map, sniping people from a location that takes 45 seconds of insane platforming to get to.
Nightfire had a goofy as fuck main story mode, but the multiplayer was underrated, may even count as 'hidden gem' status, imo.