Well, first of ingame tips:
Talk to everyone, visit everything in the start.
When you get out for the outpost quest, best get the rathound quest from agronomy as well.
Get's you a free crossbow + ammo, after all.
For the rathounds, if you run past them and close the wire doors behind you, you can shoot them with impunity.
Stealth certainly does help here.
The low int you have will definitely hamper crafting quite a bit, Intelligence, as a stat, is nearly only useful for making money and improving your equipment.
If you don't want to use PSI powers, you don't necessarily need will. Though getting some skill in one discipline can help; You get free training in thought control and metathermics after the quest, and even with very limited resources and low damage, slowing an opponent can be quite the boon.
I notice in your stats you didn't list perception. I suppose it's 8?
You have rather high dexterity, you might want to drop some points into grenades, just in case. What else is it good for, after all.
Movement in combat depends on what you have available.
Relocating can be very useful in every situation, but you'll see these situations when they crop up.
running away can be useful to deny superior enemies attacks, or lure them into traps. Keep in mind that moving reduces your accuracy with ranged weapons.
