Valentronic

First, stay in the lobby. Wait for the bell in the lobby to ring. This might take a little bit of patience, but it WILL eventually ring.

Now, teleport to the Sweety Sunshine map.

Wait for the double doors of the shop to open, then go outside.

Behind a tree in the farthest right corner will be a red heart. Touch it and you'll get the Valentronic badge.

By touching this heart, you will also get the Diala skin.