Once again, keeping the Staff raised, grab another time bomb and roll it up the stairs to the next room.

Let go of the bomb momentarily but continue holding up the staff as you pull the golden handle as far as it will go. This temporarily extinguishes some of the ice vents in the first section of trapped floor ahead.

In order to cross safely, you'll need to roll the bomb onto active vents that have safe spots both ahead and behind. It takes quite a while for the handle to completely retract, but if you take too long the vents will reactivate, so don't dawdle. In the co-op game, this is not a problem. One player can keep the handle extended while the other moves the bomb.

To clear the first set of ice vents, start by pushing the bomb onto the second vent from the left.

Then jump over the bomb onto the safe vent on the other side of it.

Grab the bomb and carefully maneuver it onto the active vent to the left. Try and stay in the corner where it's safe so you don't take cold damage.

Then jump over the bomb once more to land on the clear walkway near the second golden handle.

If you've done this fairly quickly and the light on the time bomb is still green, you can attempt the second part of the sequence now. This will help save time if you're attempting the 10-minute challenge. Skip directly to the middle of part 2 without getting another bomb.

Otherwise, after crossing the first set of ice vents, let the time bomb explode as you head up the stairs to the long ledge on the right. Step on the pressure pad. This deactivates the first set of ice vents and opens the gate so you can get back downstairs to the time bomb dispenser.

Grab another time bomb and, keeping the Staff raised to slow the countdown, roll the bomb up the stairs to the next room.

Push it across the first section of ice vents, which should now be deactivated. (Occasionally one or two of the vents stay on, like the one on the far left in this screenshot, so just avoid them.)

[Part 2 | Return to the Tomb of Hoarfrost Walkthrough]