I understand your frustration. there some things you want to consider, but before I make some recommendations I will tell you that I killed all enemy's without using statpoints in broken valley. now for the recommendations:
1) ranged attacks: a good bow can realy end a fight in seconds
some skills that are usefull with ranged attacks are:
poison arrows 1 or 2 points (single person skill)
Explosive arrows 8 points max (because gear that can add
points to this skill) and (it's an area of effect skill
thus mutiple enemy's you can hit)
2) hide in shadows 1 point only: because you will be seen
with your bow you can use this to turn invisible and run
away so the enemy's won't chase you
3) use your creature: (finish the quest Vigor Mortis)
you creature can take the incomming fire from your
enemy's
4) defending against melee attacks:
firewall is a nice skill to have 8 points max ( it's an
area of effect skill all enemy's in a x amount in meters
will be recieving damage)
dual wielding skill max this one out (10 points) doing dubble
damage by 8 points you of hand wapon has no penalty) or
you can use 2 handed skill max this one out (10 points)
bleed skill (passive skill 1 point only) does an extra
10% to your melee damage
life leach 4 points (does an X amount in % chance to get a
X amount in % back in hitpoints use this to survive longer
in melee attacks
5) other skills that are interesting if you have points left
mana leach or many efficiency 4 points using firewall and
explosive arrows uses up alot of mana use this to keep it
full
reflect skill reflect an % of the damge you recieve back
to your enemy
Evade skill use this to evade melee attacks
rush attack 1 point only
6) attacking tips:
your enemy's are grouped ALWAYS. there is no enemy alone in this game. so you need to be smart and fight them one by one
or you will be killed very quickly.
you can do this by walking to your enemy's until you see the name the run back and let him follow you. then use your bow first on him as he get closer switch over to melee wapon. (use firewall, because it is most effective when enemy's are close to you)
when you are low on health use a potion and/or hide in shadows skill
about 95% of the enemy's uses magic and 60% are ranged fighters (enemy's with a bow) so heighten reflexes and indomminable will are a must to put stat points in it hance it will make you more resistend against magic and ranged attacks (ladybird, magicblast, stun arrows, explosive and poison arrows)
there is a disadvantage: you CAN NOT DODGE poison (green) ,explosive (yellow) or stun (blue) arrows. but what you can do is let them hit a wall instead by standing behind a wall at the time they fire it. takes some practice but you'll make it

when enemy's fires magic or a REGULAR ARROW's (they are white) at you, you can step (ctrl)to the left or right and thus dodging the attack. this way they can never hit you
because the groups of enemy's are mixed (melee and ranged/magic) you must use there own wapons against them. so with melee attackers you use ranged/magic attacks to kill them before they reach you.
for the ranged/magic attackers you use melee attacks in return (rush attack in combination with firewall is handy with those enemy's)
Note: if you can kill the magic attackers from a distance (explosive arrows is handy) DO THAT, because if you are going use melee you are exposed to magic that can use on you (like lowering you resistances)
last advice I give you: have a LOT of patience don't rush in take your time!!!!!
well good luck and don't let Damian mok you;)