Here is the saved data!
https://drive.google.com/drive/folders/1uZ_p4zU_-c_y5Tk4je5SIorJyYqOXiZN?usp=dri...
THANKS! It's definitely a flag that didn't clear after the story mode, though I don't understand why (yet). So, if you want to reset your arcade run and try it until I fix stuff, open the save file savedataArcade.cfg and replace "true" after "hasToShowLastBoss" with "false" (no quotes), then save the file. I would suggest to set bossBeaten0=0 and totalNumberOfTurns=0 too to have a fresh start.
I will investigate the bug, thanks a lot for reporting it again!
To be honest, Arcade mode is just Story mode with a turn limit and no dialogues. You have 120 turns to beat the first 8 bosses and then one shot at beating Barion. The goal would be to finish it in the least amount of turns. My personal record for the first 8 bosses is 110 turns circa, give or take 5-6. I'd be curious to see what is the most optimal strategy, if players can find one!
I tried many times and once lost to the last boss after defeating 8 bosses in 112 turns. I then removed the Sharpen Emerald Saber on Vesper and retreated once, but finished defeating 8 of them in 119 turns and was able to complete the game in a total of 177 turns.
The Arcade mode has a seemingly strict turn limit, but it was a very fun mode to figure out the strategy. MEOOOOOOW!!!