Damn, I just started the game, and it send me a raid almost immediately, and it seems a bit op, what are you supposed to do? just run? (Although it seem you can cheese it very easily by doing the maze + spike traps strat)
1. You're immortal. Act like it. And if you click quickly during the ...scenes, you wouldn't even get raped.
Villagers with "survivor" behavior are also immortal. So keep them as survivors until you learn to defeat raids.
2. You should be able to craft a spear at a wood workbench early on. It's a good weapon. Make one for yourself, and one for the other MC.
3. As others have noted, this game has no armor (because it's a lewd game, I guess), so the best strategy is to not get hit. Enemy attacks have long windups you should use to get out of their hitbox. Your hitpoints are just there for when you fail to dodge enemy attacks.
For raids, this means hit-and-run tactics. Or shoot-and-run tactics if you have a bow.
4. I recommend investing in regeneration skill (first on the list) early on.
That's the dilemma for me. How to get a life orb, without losing a child?
The way I see it, until you can provide good conditions for childbirth, you'll be losing a lot of potential children anyway. Abortion drugs are just for the impatient, or for people who don't want their village to grow too big.