The recent updates were amazing, I really love how much they added to the game. All the new characters are really cute and the way the bosses are done now really makes them stand out.
The higher wave versions get pretty frantic to fight with how much faster they move in general on top of increased bullet count.
I do kinda wish though that the optional vore was a tad bit easier to obtain on an average run since you have to deal with the RNG of a bubblegum cake either spawning a wave before or after the boss AND not only build up a lot of gas for decent damage but not use your burps once after getting the gum so you don't waste it.