Why is Stranger's voice acting so oddly paced and somewhat off? He's a Steef. A side character's conversation reveals that Steefs can't speak. Stranger had to teach himself how to speak the native language, but is not fluent.
Early in the game, Stranger says (with regard to his surgery) "I need this to survive." Once we know what the surgery is (Removing two of his legs to make him harder to identify as a Steef), his use of "survive" rather than "live" seems telling... It's because the Steef were hunted for a high bounty. Stranger himself might be aware that somebody is probably out their to hunt him.
In the final levels, Sekto repeatedly rants to Stranger that "The water is MINE". In the final cutscene, we discover that Sekto is actually an aquatic creature native to the Mungo River. He likely considers his natural habitat to be his, to do with as he pleases.
Stranger's bounty device converts enemies into ammo instead of saving them for turn-in later. The enemies are used as food for your ammo, which includes rabid furry things, bees, spiders, and spiked slugs. You get more ammo from live enemies. This begs the question if your critters had to eat your enemies in order to reproduce.