A small tip if you have a open roof… Place at minimum one floor above your loot / work / sleep room.
Place spiked fences all over the area so anybody trying to tower - jump will face a very painful death. Jump = damage already by 50 to 70%. Spike = Finished them off before they can heal.
And if you want to make it extra secure: Spikes + Bear traps under them. And it forces them to start shooting all your traps to be able to jump. There shooting will alert people in the area and the raiders may be shot by other people around.
Take it from me, i have seen people build on top of “none-raid able” rocks and while you where unable to climb the rock, they made the mistake of placing there cupboard not close to the outer walls. You build just upon the edge of there cupboard area, build up with twigs, then when you are above there cupboard range, place two floors. Run and jump. And 9/10 change you will hit it.
The problem with cupboards is that there range is in a sphere shape.
B ------ C
So you need to:
a) place cupboards at the 4 edges of your base for maximal range.
b) also on the lower and higher floors to create a overlap zone.
I have seen clans build a tower that was 50 or 60 levels high, with a massive central shaft designed to make anybody that tried to jump die. The clan attacking just build a twig tower 100 stories high, jumped, a few died but some hit the edges. Then they teleport the rest of there team over. And then they started to C4 down.
Take my advice, as a single player ( as your friend is not active playing a lot ) your base WILL get raided almost daily. You do not have the resources to fight any group or clan who are semi-organised. They know the tricks, the ranges and have the resources.
This is also why on a lot of servers after the wipes most single players will simply quit. Single or small group players do not have the time and resources to constantly rebuild / re-harvest all there losses. You become a defacto cow ready for milking by bigger groups.
My advice: Look hidden spots. Spots that are difficult to reach ( most of the time they also have little resources ). Build a hidden base ( do not bother with caves as most people can recognize them ) that has a lot of trees around it. Keep it SMALL the first few days. Do not draw attention with assaults on people close by.
Example: The server i am on, i got constantly raided. No matter how good a base i build, its impossible to keep up with groups. They break down walls, or C4 walls, or find weak spots that you just did not have the time to reinforce.
So i changed tactics. I moved to a cold area with nobody around. Found a nice spot with a cliff and trees. And i build against the cliff with 3 trees close to it.
- Only need 50% of the resources. Only two walls to deal with instead of 4.
- Hidden by natural elements. People can not see the base from above the cliffs unless they jump down ( what nobody will do as there looks nothing interesting there ). Your also almost invisible from the ground and the long trees also provide a natural roof hiding ability.
- Cold: Most people without protection will freeze.
- Difficult to build as the foundations in general are not flat.
- Middle of nowhere = you need more time to raid.
So in short: I build a small 3 tile home, build it up a few stories. With it hidden and no constant raiding, i was able to build up stone and process iron. Then i reinforced this small tower to pure armored ( freaking expensive these days. Crazy expensive ). O and i had NO cupboards up to that point! Cupboards are like a big indicator = > Here there be a raid able target. Risky? Sure… But at the time it already become too difficult for small players to raid this mini-tower.
The next step i placed more floors on top with floors / half blocks all reinforced. Like a WOII bomber proof bunker.
More resource gathering, some raiding, and only THEN i started to build outwards by making a second “wall” ( Foundations with a combination of double outer and inner wall + floor / half blocks ). And as this become visible, then placing also a lot of traps on the roof, in combination with spikes and multi spike floors / levels.
Can it be breached? Sure … with a lot of time and patience but it will cost them a LOT more C4 charges then there daily raiding me and wasting time rebuilding a already flawed building. I estimate it takes maybe
Long story short… Everything can be raided. But as a single / double person team you need to focus more on gaining as much resource at the start and then building so that you become a too expensive raid target. Open roof structures are still easily raid able. Most people with experience know how far above a target they can jump and survive. The moment they are inside they can authorize themselves on your cupboards if they are not in walls or behind doors. And simply twig build out again and destroy there twigs with a arrow ( by taking out the bottom twig block ). End result: You look to be hacked when in reality the person was just smarter.