Which was scary, as I forgot I had to remove the module before upgrading it. Heck, I even upgraded my Cyclops depth module while 1100m down once I found some kyanite. Which came in handy later on, as I had to fabricate some items deep down. I had fabricators, mod stations, food, a bed, battery chargers, basically everything. I set up a power cell charging base at the main junction of the river, and then used my Cyclops as a base as I went deeper. It's mobile base function does come in handy once you need to explore past the lost river. IMHO, the Cyclops basically exist to cart the Prawn around. I have more in my base, but I also use a bioreactor. Three ensures I always have a full pot ready. Eat three, use the fourth for replanting the pot. I find three pots (so, 12 melons) is plenty for food and water purposes.

Although, at this rate, I'll have my second game ready to go by then.heh. I've still got my first game saved right before the end, so I can go back and pick up the achievement when it gets fixed. But take that with a grain of salt, it was internet hearsay. As for the achievement, I read somewhere you only get it when someone actually finds your time capsule. I'm going to have to leave something nice in mine. Those two alone will cut some time out of my dives into the Inactive Lava Zone. I found a time capsule and some nice soul left me three crystaline sulfur, and another had a Cyclops depth upgrade. This time, I was all over the map using just a seaglide. My first game, I explored in very tight spirals, afraid to go further than the game was pointing out with the radio messages. Interesting though, some of it is lack of fear. Some of that is knowing where and what to grab first (I put marblemelon farms in as soon as I built my first base module, and therefore didn't spend 3/4 of my time trying to catch fish for food and water).

At 10 hours, I'm probably where I was at 25-30 in my first game. It's amazing what a difference knowing what to do makes. I started a second game and am about 10 hours into it.

Subnautica cyclops mobile base