Now you must make your way upriver across the spiked columns with the Glyphs of Osiris. The screenshots below show the single-player game. In co-op mode the process is the same. You'll need to count down and jump together in order to land safely. In the 3- or 4-player game, you might want to go two at a time, rather than trying to jump all four players at once.

Start on the first column, where the spikes are retracted.

Jump to the column ahead, rasing the Staff of Osiris as you jump in order to lower the spikes on the column ahead, while simultaneously raising the ones on the column you just came from.

Jump from the second column to the third, where there are no spikes, only a square pressure pad and a few gems.

Stepping on the pad raises a block out of the pool so you can climb back up if you fall in. You can also pause here to eliminate any stray crocodiles.

Jump onto the next green column, which is safe at first. Then jump to the next column, rasing the staff as you go to lower the spikes ahead, while simultaneously raising the ones on the column you just came from.

Move forward onto the ledge. Then retrieve the gem on the corner column with the staff still raised.

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