If you want to know how to kick 5 creatures into quicksand in Revenge of the Savage Planet, you are in the right place. The “Sinking Kick” challenge in Revenge of the Savage Planet asks you to kick five creatures into quicksand. This is part of the Upgrade-O-Rama set of challenges and can be completed on the planet Xephyr, where there are several large quicksand lakes.
Where to Find Quicksand on Xephyr

To complete the Sinking Kick challenge, you need to find quicksand. The best spot is on the planet Xephyr, especially in the Pillars of Turpitude area. Here, you will see several wide, brown quicksand lakes. Look for pools with moving sand and bubbles. These spots are perfect for kicking creatures into the quicksand.
How to Kick 5 Creatures into Quicksand in Revenge of the Savage Planet
You need to lure creatures close to the quicksand pools. Throw bait near the edge of the quicksand to attract small animals like Puffer Foxes or Scorpion Puffers. Wait for the creatures to come near the quicksand. Stand behind them, face the quicksand, and press the kick button.

Make sure your kick sends them flying into the pool. Step back after each kick to avoid falling in on yourself.
If you run out of creatures, look around for more. Sometimes, creatures will respawn after a short wait. You can also move to another quicksand pool nearby. Any five creatures will count for the Sinking Kick challenge, so you do not need to use the same type each time
Completing the Sinking Kick challenge in Revenge of the Savage Planet helps you unlock new upgrades and boosts your progress in the Upgrade-O-Rama questline.