This is a cute game! I love that you made the candy assets shiny, that's a clever use of the low poly art style.
Using the tongue is a fun mechanic. Having to essentially walk towards the opponent to aim the candies at them feels strange to me, and I never quite got used to it. I'm used to games where you pull back, away from your opponents to aim at them, like a slingshot.
The default controls need to change. the action button being right next to WASD is clunky, and it's strange that the arrow keys don't work.
The campaign mode has levels on timers, and if you don't make it on time to the level, the enemies come out and attack your base. Why? It doesn't seem to add anything to the game and doesn't fit with its chill vibe.
I did not test the multiplayer mode, but I can see this being a good party game for Switch.