This hasn't been my experience at all. I've done my own arc on a few of my characters and I only have the souvenir once.
"You don't lose levels. You don't have equipment to wear out, repair, or lose, or that anyone can steal from you. About the only thing lighter than debt they could do is have an NPC walk by, point and laugh before you can go to the hospital or base." -Memphis_Bill
We will honor the past, and fight to the last, it will be a good way to die...
<shrug> I don't know what to tell you...I've got four copies of the souvenir for the arc I'm working on now (not that I mind; who can't use more HappyCorpse coupons?) Replay the arc, same character, different character, doesn't matter: another copy of the souvenir.
Arc 55669 - Tales of the PPD: One Hell of a Deal (video trailer)
Arc 64511 - The Wrecking Ball
Arc 1745 - The Trouble With Trimbles
Arc 302901 - HappyCorpse
Huh. Just ran my arc and it turns out you're right. This is a new though, since I've run the arc at least 3 times, and I've only just gotten the second souvenir now. I'd suggest reposting this under Bugs, as it's clearly not WAI.
"You don't lose levels. You don't have equipment to wear out, repair, or lose, or that anyone can steal from you. About the only thing lighter than debt they could do is have an NPC walk by, point and laugh before you can go to the hospital or base." -Memphis_Bill
We will honor the past, and fight to the last, it will be a good way to die...
Yeah, I bugged it. I've been getting duplicates since AE came out, but older souvenirs that I didn't delete are gone now, too, so something may be (more) amiss.
Arc 55669 - Tales of the PPD: One Hell of a Deal (video trailer)
Arc 64511 - The Wrecking Ball
Arc 1745 - The Trouble With Trimbles
Arc 302901 - HappyCorpse
AE arc souvenirs are currently awarded every time you complete an arc, so if you play a particular arc frequently (as I do my own, testing changes and tweaks), you end up with a stack of the same souvenirs. Sure, it's easy enough to delete them, but it would be a nice QoL improvement to include the arc number in the data written to the PlayerCreatedSouvenir file; when an arc ends and a souvenir is to be awarded, the system checks to see if the arc number is already there. If no, it awards the souvenir normally; if yes, no change is made to the file, and no duplicate souvenir.
Arc 55669 - Tales of the PPD: One Hell of a Deal (video trailer)
Arc 64511 - The Wrecking Ball
Arc 1745 - The Trouble With Trimbles
Arc 302901 - HappyCorpse