Five will be joining the search party in the woods, obviously very concerned and intent on clearing up this mess. And then with the abductions happening (Five isn't being abducted) it will not make him a happy camper and possibly bring out the Oncoming Storm in him, especially after what happens with Ten.

And then it's all visions, guilt, paranoia and possibly death. If Five dies at this point, he'll be a ghost for the rest of the plot. Who would like a Hopkirk (Deceased) to their Randall?

Alive or dead, he'll be around for the boss battle. And if he is still alive at this point, he soon won't be because I've asked to kill him off in the Boss Battle otherwise. Five's fate literally is in the games hands, along with his loss depending on RNG. :D