Round 16 is as good as I can get. Getting 3 of kind is very RNG based, and the enemy gets them much earlier than you.
It might be nice to add some sort of meta game. Like each death ypu get XP that you can use to upgrade stats or specials or something.
Otherwise, it's pretty good. I would add rules to this page. The tutorial was unnecessary as the only rules are side board, main board, 3 of a kind upgrades. Stats are helpful, but I don't need a tutorial round so much as a rules page. The mock battle just delays gameplay start.