I have been playing Cross Code recently and the moment I heard your OST it immediately reminded me of the vibe of the game, so in the regard of sounding good for a video game you've done a really great job! I think it really captures the vibe of playing a modern game with retro-style aesthetics!
Now on to the more technical parts. The composition itself is already great, I don't think I'm unable to give any valuable inputs for that, however I may have a few criticisms regarding the mixing. That said, please note that this is NOT objective, rather just a "how I would do it, if it was me".
I really like the groove of the overall OST especially since that's your main goal this time around, I think the composition itself is fantastic. Now, one thing that I would do to really improve the sound is by adding a bit more groove compression to the mix bus. I'm unsure whether you've already had that in place or not, but regardless I would try to be a bit bolder with it!
Another thing is the way how some instruments don't feel like they belong in the same "space" as the other instruments. Take for instance the Sax in Baile en la Playa and Sunstolen Espionage (really love the way you compose the Sax there btw), while by itself they already sound pretty nice, if it was me I would try to make it blend a bit more with the rest of the instruments, perhaps with glue compression, or maybe add a bit more reverb, or dynamic EQ, or simply re-adjusting the levelling (point is that there are multiple ways of achieving that).
Again, those are subjective and please do take my criticisms with a grain of salt because I myself is still learning as well. If you believe in your sense and style more than my yappings, then please keep believing that and just ignore everything I've said! Overall though, I think it's a really great submission and you definitely materialized your vision well through your song!