Tomb of Hoarfrost - Chasm with Drawbridge (part 1)

Lara Croft and the Temple of Osiris screenshot
That upgrade looks tempting, but naturally things are more complicated than they seem. As you jump across the gap...

Lara Croft and the Temple of Osiris screenshot
...the bars close, and you're left holding onto the ledge. Very carefully traverse to the right, following the active ice vents as they move along ahead of you.

Lara Croft and the Temple of Osiris screenshot
Pull up...

Lara Croft and the Temple of Osiris screenshot
...and step on the pressure pad to extend a drawbridge to your right.

Lara Croft and the Temple of Osiris screenshot
In the co-op game there are 2 pressure pads (plus a third pad near the health upgrade). The one on the right extends the drawbridge. The middle one lowers the bars so you can reach the upgrade, but don't worry about that just yet. Only one player needs to traverse past the vents and extend the bridge.

Lara Croft and the Temple of Osiris screenshot
When you jump onto the drawbridge, 2 Marks of Set appear and enemies begin to emerge. You can close the marks to prevent more creatures from appearing or let them come and kill them for points. this is also a good spot to attempt the Challenge: Kill an Enemy Using an Exploding Mummy's Self-Destruction Attack.

Lara Croft and the Temple of Osiris screenshot
If you shoot the large mummies while they're still standing in a cluster, it's likely that one will explode, destroying the others.

Lara Croft and the Temple of Osiris screenshot
You'll then receive a ring: the FROZEN MARK OF SET'S ASCETIC (Cold Resistance, Defense+, Speed+, Ammo Efficiency+, 10% Cheaper Items).

Lara Croft and the Temple of Osiris screenshot
Then finish off the remaining enemies. In the single-player game, it may help to create a bottleneck by retreating up the stairs to the southwest then shooting/bombing enemies as they approach.

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