After landing on the planet, glide or ride the elevator down to meet the Smuggler. He says Neftin is located on the other side and you'll need some Hoverboots in order to get there. Unfortunately, Ratchet lost them when the Nebulox was blown up, and the Smuggler will give you the pair he has for 10 Gargathon horns.
Find the nearby Jetpack refueling station and you'll see a path behind it. The horns you're looking for are either trapped inside of fossils, which will get you one, or from the creatures themselves (the large, flying ones), which will get you three. When you cross, you'll see a short scene that introduces a new enemy, one that explodes if it gets too close; it also explodes if you kill it, so make sure you kill them from a distance.
There are around 14-16 Gargathon horns in the area before you will need the Hoverboots to get to other areas. There are at least two to three Gargathons around, some of which are flying around and one might be hiding underneath the water. As for battling them, they have two basic attacks, one of which is a roar that summons the small enemies you've been fighting the whole game. The other attack is a green laser that only hurts if it touches you.
Once you get the required amount, head back to the Smuggler and get your Hoverboots. If you head towards the refueling station, you'll learn the Smuggler can fix it for another 30 horns. This is still the same, but thanks to the Hoverboots, there is much more room to cover. You still want to go in the same area as before, but utilizing the launch pads for the Hoverboots to get to previously inaccessible places.
Finding Neftin
Find and acquire the 30 horns, then return to the Smuggler to have him repair the refueling station. This will make it easier in finding Neftin, so find the other path near the Smuggler and take it. When you get to the bolt crank, turn it and you should see the location of the battery bot needed for the socket that appears.
You only have 45 seconds to get to the bot's location, grab it and place it into the socket. Doing it will make a series of platforms appear, leading to a large platform with another bolt crank and some of the bomber enemies. From here, with the Jetpack, you should be able to see an area nearby with a ship of some kind. To the right of that is a smaller path, which is where Neftin is hiding. He asks you to go to the Museum where the Dimensionator is located.
