Phendrana Drifts
The next upgrade is back in the Phendrana Drifts so return there. If you're thinking there has been a lot of commuting lately then don't worry; there are many more new locations to be explored now.
Phendrana Shorelines
Before going on, it's a good idea to save at the Save Station nearby.
Scale the ledges toward the door leading to Ice Ruins Access just like the first time you were here, but stop on the ledge above the entrance to the Save Station. Turn around and you will see a hovering platform you can reach with a double jump. From there look out across the valley to see another hovering platform a bit below and some distance away over the water. It looks too far to reach even with a double jump but it's possible. If you're having trouble then get a running start and hold off on the second jump until you're nearly level with the platform you're going to. From there it's an easy hop to a ledge with an ancient looking portico and the only exit you haven't passed through yet.
Temple Entryway
Blast the wall of ice here and time your way past the Bombus to the other end of the passage.
Chozo Ice Temple
There is a Baby Sheegoth at ground level here. Defeat it and then start scaling the ledges up the walls. There are Crystallites and a new creatures, Ice Parasites, patrolling some of these ledges so clear them if you think they will get in the way. The Ice Parasites are cold adapted versions of the Parasites you saw on the frigate. Be sure to get a scan of one because they will be gone the next time you're back here.
When you reach the top, jump to the ledge to enter the temple proper. There is a frozen fountain here but you don't have a way of melting it at the moment so you need to find the way out. Scan the grate on the right to learn that it is adorned with the image of a Chozo Shaman. You may remember passing four similar statues in the hall leading to the fountain. Go back and scan them to find they had various jobs: butcher, baker, candlestick-maker, and Shaman. Scan the Shaman to reveal that it's made of brinstone which is susceptible to missile fire. Fire a missile at it and the statue breaks revealing a Morph Ball slot. Activate the slot and the grate opens, so go through the door behind it.
Chapel Tunnel
This is a Morph Ball maze and you need to solve a bit of a puzzle to get through. Two bombs will break the metal boxes so you can get between levels, and one bomb will destroy the stone sections of cylinders. The rest will be easy enough to figure out.
Chapel of the Elders
You enter a large square room and on the other side you can see your prize, the Wave Beam. As you approach, it recesses into the floor and walls drop in the corners revealing Baby Sheegoths.
When you've finished off the Sheegoth, your Wave Beam rises back out of the floor, so pick it up. The Wave Beam opens purple doors as well as the blue doors which will open with any beam. You'll need the new weapon to escape the room.
As a weapon the Wave Beam is most useful against mechanical enemies. It can also be used against Bombus, so you can take them out now instead of dodging them. In general the Wave Beam has more power than the Power Beam but it's rate of fire is a bit lower. The Charge Beam in combination with the Wave Beam is useful to paralyze enemies for a few seconds.
Chozo Ice Temple
When you get back to the Ice Temple you'll find that all the creatures there before have been replaced by Bombus, which is useful to practice your new ability to defeat them, but bad news if you missed your chance to scan the Ice Parasites.
Phendrana Shorelines
There are now two Baby Sheegoths here; this is a hub for Phendrana so they can be annoying after a while. It's probably a good idea to save now since the Save Station is handy.
There are no new expansions to get at this point and only one new place which can be explored now, but it will take quite a while and will be covered in the next two pages.