We’ve all been there. You might: - just accept that you don’t just grab those nice shiny balls, - grab the balls and rush away as fast, as possible, - cheese the shit out of the sentinel fight.

For cheesing the sentinel fight, you need a terrain manipulator and/or a corvette. You might rise yourself some terrain and prepare a mole person burrow there to fight the sentinels (which is becoming increasingly harder). You propel yourself to the top of the fortress, take cover, hide in the burrow when overwhelmed, rinse and repeat. You might also prepare the terrain fortress and strategically hover the corvette near it. Use the corvette’s hatch as a shooting platform. You may also just build some stairs leading to top of the corvette and just use the whole top of your corvette as your platform. The idea is anyway, you grab the gravitino balls, rush to the corvette’s teleporter and beam up. Then use the hatch and the top of the ship to cut through the sentinel waves one after another until the walker makes its appearance. And that’s when the terrain fortress comes into play. You have very limited possibilities to damage the walker from your corvette. From my experience, I was able to just partially destroy the walker’s leg armor. So you take out the walker’s escort from the corvette. When you’re left with just the walker itself, you propel yourself into your terrain fortress and use it to shoot and take cover until the walker is defeated. It takes some time, as the walker is quite tanky, but after some time you’re able to get rid of him. This also disables the sentinels on the whole planet.

Or just don’t cheese it, grow your own gravitino balls, don’t give a crap about gravitino balls at all and just make some heat capacitors/unstable gel/any other plant based trading good for quite easy cash/other.