Hey there! I'm actually one of those indie friends mentioned above. Originally the language thing turned me off as well, but with some convincing I decided to dive into the game after all. Not like I havent played confusing-to-learn games in this genre before, really.
And honestly.... after quite a number of hours with the game, I gotta say... the language bit stopped mattering almost immediately. Partly due to how well you did with making the ability icons descriptive, I find that honestly very impressive. I went into this expecting to have alot of trouble remembering what each one does (my memory is bloody horrible... with something like Isaac for instance I constantly have to check the freaking wiki because even after 400 hours I still cant remember what half the items do) without the ability to get a tooltip description, but... no, the icons honestly do the trick.
Anyway, I mostly just wanted to say: This game is absolutely fantastic. You've done an incredible job here. I've really enjoyed your previous games and they're all things that I constantly come back to, but I honestly think this might be the best one you've made. I'm very impressed with the depth and creativity on offer here. The more I play it, the deeper and more challenging it seems to get. I'm currently on an 11-streak run (score of about 280... alot of room for improvement, yep), have some artifacts and even reached the secret room, and am loving every moment of it.
I cant wait to see whatever you might make next!