Playing on an emulator with automatic translating sounds neato. I instead use google translate and my phone to help me out when playing on a duo. Whatever gets you playing!
I've been trying to beat games for years and have been posting just screen shots of endings. I don't worry about "proving" I beat a game, so you should similarly feel free to do what seems like the right thing for you. If people want to doubt or piss and moan, fuck 'em! For myself, it's mostly a way to nudge myself to play different games and not give up so easily.
PCE Daisakusen used to be a great resource for a nigh complete list of games. It was easy to use and track your own collection, but it's sadly been dead for quite some time. The best alternates are
PC Engine Bible and maybe
PC Engine Catalog Project. The latter hasn't been working for me, but maybe it's just my phone or something, and as a bonus it has PC-FX titles.