We’ve posted detailed instructions on how to get to skull number four.
It’s not available during free exploration of the Zeta Halo ring.
Turn 180 degrees to stand with your back to the currently ignored destination marker.
It will lead you to a room witha power seed.
Linear corridors will lead you toan inactive generatorin which you mustput the carried power seed.
Now you’re able to continue back with the mission.
Further along the way, make a habitof selecting left corridorsin every newly visited rooms.
Thanks to this, you won’t miss the second part of the skull puzzle.
Once opponents are defeated, follow this new corridor.
In the new roomuse the Grappleshotto ascend to a higher level.
Beware of stealthed enemies wielding blades- use the sensor if they are too much.
you’re free to also use grenades to make them come out of hiding.
If necessary, jump down to have more room for movements.
The skull will be in the place where the enemies where.
It is a pop in of an easter egg.
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