Stranded Deep

You can obtain this along with all the other 10 day achievements by just making a game on Creative difficulty (no hunger, thirst, etc. to worry about) with Passive wildlife (enemies are not aggressive, nor will they defend themselves).

Paddle to the starter island, then just stand there and leave the game running. If you want, you can create a shelter to sleep at. This will skip over most of the night, although it seems a bit random exactly how soon you wake up.

In game days are 40 minutes long. 20 minutes of day, then 20 minutes of night. 10 days will therefore take at most 400 minutes, which is 6 hours and 40 minutes of idling. Skipping some of the night by sleeping will cut down the time by a bit.

The other 10 day achievements are:

Survive for 10 days..... really not much more than that. Just keep your health up by eating and drinking plenty of food and water. This is pretty easy to acquire just while simply gathering supplies, building a raft, and leveling up your skills. I went to sleep on the night of the ninth day, and when I woke the ‘cheevo popped for me.
I was able to combine this one with Gone Green, Island Hermit, and Fish are Friends, as they all have a 10 day requirement.