I was thinking and a question popped in my head. The question is if you kill an animal in multiplayer and someone else picks it up does it count as killing the animal for the run and if so, is the run over will the text in the chat saying "username harvested a animal for username2" shows up?

Yes, I think we should add some rules about Multiplayer mode. Indeed, the fact that someone else pick up the animal instead the killer himself, can be a problem. In my opinion, if someone else harvest an animal instead of the killer himself the both pov must be present when submitting the run.

The objective of the Multiplayer mode is to help each other to realize the run as fast as possible. I will add new rules regarding this. Moreover, I think that the list of players must be shown during or after the run (with F3) because this should avoid some misunderstanding...

would the connected text that shows up telling you all the players when you spawn in count as showing the list of players?

Yes, it can count. If you're doing Multiplayer runs, don't forget to add the name(s) of your mate(s) when submitting the run. I've already updated the rules, so the POV of the killer and of the harvester MUST be added.