Maybe swimming and an idle, and maybe a few pointing animations.

: Yes, comparing it with some footage in one of my movies (BCM105 around 1:12),
: more solid colour seems needed for sure. But also, Jackal dude appears
: to've mislaid his plasma pistol!

That is a whole can of worms. Maybe one day I will export the pistol and texture it, place it in the hand, facing "forwards" and update it's position as the animations play. But that's starting to recreate the game in blender so I doubt I'd ever do it.