Slash Dash Samurai

I played this game at GGC. How to play is very intuitive! It was genius to have the big inviting touch screen at the show floor. The game is solid. It feels like and is sufficient to be "one of those" type roguelikes (vampire survivors etc). And still it has its own gimmick and works well on touch devices, so I think it is a solid product. The graphics are not particularly stunning or awe inspiring, (which might not be necessary in the genre?). Ensuring cohesive and distinct visual style can also be good for marketing. 

Things you could work on: Maybe you could take this to "the next level" with ensuring great UX with enhanced visual clarity & contrast between background, foreground and ui. And maybe polish in form on smooth animations and transitions. Also try to optimize the heck out of the mobile version, many people don't have the latest phone, and I think this type of game should be able to run really smoothly on most devices!

Don't know what your marketing strat is, but I would start poasting short gameplay videos on tiktok etc and start leading people to phone store page to buy or steam page to wishlists.

This guy Chris Zukowski is the goat of video game marketing as far as I know. I am not a marketing expert though. Anyway, Good luck!