This lower section is flooded, and there's another hole in the floor where you can dive down below the water. Head into the room behind the forcefield and drop down the hole in the floor. Place it on the pressure plate and the forcefield next to you will open. Climb up above the forcefield and look back at the temple wall, and you'll see a little puzzle cube that you can grab using Herakles's Strength.
Opposite the temple wall is a forcefield. Here you'll find a pressure plate next to the temple wall. Now head to the opposite side of the temple (south-east side). Step 2: activate the pressure plate (south-east) Top: puzzle cube to be placed onto pressure plate. Incidentally, you'll also catch a glimpse at the large spear-wielding warrior waiting for you inside. Step 1 is incredibly simple: you just have to press the button right in front of the main entrance to the temple on the north-west side. Step 1: activate the crystal by the main door (north-west) Step 1: press the button in front of the Midas Temple entrance. The first crystal is easy to activate, but the other three require a bit of work. To solve the Midas Temple puzzle and lower the forcefield to get inside, you have to activate all four crystals around the main entrance. Watch on YouTube How to solve the Midas Temple puzzle in Immortals Fenyx Rising