View Solution

NO SPOILERS

This achievement has a two main solutions which are described below. If one doesn't work for you then try the other. I personally used option 2 to earn this one.

Tips:

-Practice flying the ship until you are comfortable with controlling it.
-Use the velocity guides in the ship (dotted white arrows around a targeted body) to figure out your alignment.
-The typhoons will cancel out all your momentum so you have to get lucky with where you impact the planet.

Guide to Deep Impact Achievement: Method 1

-Start by climbing the elevator and taking off in the ship. Target Giant's Deep.

- While facing the planet, backward thrust away from it until you are a good distance away. I have seen some people get as little as 300km away and have this work, but the more the better.

-Once you are far enough away, start accelerating towards the planet. Keep the Velocity guides as close to zero as you can so you don't miss it.

-Crash into the planet. If you avoid all typhoons and islands then you should plunge straight through the undercurrent and unlock the achievement.

Guide to Deep Impact Achievement: Method 2

-Start by climbing the elevator and taking off in the ship. Head towards Giant's deep.

-When you arrive, head towards the smaller typhoons and find an island nearby. There should be a blue gravity spot on it. Land your ship on this spot and wait for the typhoon to contact the island.

-The island will be thrown into low orbit. Quickly take off in the ship and move to the coral-covered bottom of the island. Orient yourself with the "roll" mechanic so that you are sitting with your escape hatch on the bottom of the island.

-Ride the island back down into the planet. when it crashes into the sea, it should push you through the current. You can use your boosters to give you an extra bit of speed if you need it. This should unlock the achievement.

Congratulations on earning the Deep Impact Achievement!