In the cave level, how can I hit all four crystal pillars at once？ I’ve tried many times, but it doesn’t work.

By the way, will there be more updates in the future? I absolutely love this game!

If you're talking about the vertical switches, you need to do a falling kick (press space while on the air) and hit them all on your way down. If the switches are all on the ground, you also need to do a falling kick, if Crania is pregnant then the shock wave should hit them all. Yes, more updates are planned for this game. Please consider supporting if you have the chance to help the game's development!