The Third Heart Stone
Your business at the Foundry is almost finished—the third Heart Stone isn’t far. With the second Heart Stone in place, sprint south to locate a Maker Custodian that sits near a gate. Before activating the Custodian, allow Karn to toss you over the gate and into the passage beyond. Pull the nearby lever to lower the gate, and then return for the Custodian. Smash away the passage’s Corruption crystals as you head for the Foundry’s final area.
Area 19: Chamber of Corruption
Roll the Custodian down to a small, crystal-filled chamber, where the third and final Heart Stone is housed. Park the Custodian on the nearby orb slot to lower a high gate on the west wall. Dismount and climb the west wall to reach the ledge above.
Deathgrip the hoop in the fiery passage that follows to swing to a hanging post.
Slide down the post and 180 leap to the smaller post at the corner of the nearby wall.
Perform two more 180 leaps to cross the next two posts, and then wall-run toward a hoop.
Deathgrip the hoop, along with the next one ahead, to extend your run to the far ledge.
Hearty Congratulations
The final Heart Stone is now within your grasp! Use your Deathgrip to knock it free.