Hey Twhezy! Thanks a ton for the feedback and for playing the game! I'm really glad you like the pixel art.
To answer your questions:
1. Nerd Girl (glasses) and Goth Girl are currently in development. This beta features 3 out of the 5 planned characters. They’ll be joining the office in future updates!
2. Ping Pong: It’s all about timing! You need to swipe in the direction of the ball exactly when it appears on yur screen. If you miss the timing, there's a short penalty delay (cooldown) before you can swing again, which is why spamming doesn't work. I'll definitely look into making this more intuitive in the next patch.
Thanks for the support, stay tuned for more!