This Seeking Tech guide will show you how to unlock the Un Jammer Slammy trophy in Astro Bot. To do so, take the following steps:
1. Make your way through the Construction Derby stage until you get the Bulldog powerup.
2. Afterwards, break through the glass panel and then defeat all the enemies on the basketball court.
3. You then need to break one of the boxes that has basketballs inside.
4. Next, line up with the basket and then try to punch one of the balls into it. Once one goes through, the trophy should unlock.