Thonky.com's The Legend of Zelda: Tears of the Kingdom Guide

Zakusu Shrine is located on Naydra Snowfield, southwest of the Mount Lanayru Skyview Tower and the Naydra Snowfield Chasm.

Shrine Location

To reveal this shrine, you must activate a glowing circle on a floating island in the South Lanayru Sky Archipelago, which can be reached by launching from Mount Lanayru Skyview Tower. The floating island is south and slightly east of where the tower launches you. After you activate a glowing circle, go to the slope just before the green circle that appears, then hold ZL, press X to jump, then press A to shield surf. Shield surf through the green circle that appears, then use the paraglider to safely land on the slope on the surface where the next green circle appears, then continue to surf through the circles until the shrine appears. Zakusu Shrine will then be located at 3527, -1482, 0168, on Naydra Snowfield, southwest of the Mount Lanayru Skyview Tower and the Naydra Snowfield Chasm.

Proving Grounds: Ascension

Take the weapons from the rack near the entrance. There is a stone platform that comes down from the rail in this room. You can use Recall on it to send it back up, then go to the platform near the end of the rail and deactivate Recall, then when it is close enough to jump onto, use Recall on it again to freeze it temporarily, and jump onto it before it goes back up. This will take you to a fire fruit tree. Defeat the Construct that comes to attack you in this area. From here, you can try to glide down and shoot the Constructs with arrows.

There is an area with laser beams on one side of the room. If you trip the laser beams, a time bomb will drop from above and activate, so be sure to run away from it if this happens. The room behind the lasers contains two rockets. You can fuse a rocket to your shield and then hold up the shield to be launched upward. There is also a hot air balloon in the corner. You can light a torch and stand on the platform and hold the torch under the balloon to go up.

After you defeat all the Constructs, the gate opens. Go through and open the chest to get a Soldier IV Spear or similar. Then check on the dragon ring to get a Light of Blessing and complete the shrine.