Andor's Trail

215 AC are the strong khakin. The other Khakin have a similar AC.
180 BC are the basement rats. Plaguestriders have like 160 to 170

There is a monster with BC 500.

it is designed to kill you definitely, in a certain situation, when you have managed to lock yourself in by your own stupidity. Normally no one would ever see this, but there is a very special case that couldn't be restricted by the engine that results in this lock

where ?????????

In Guynmart, but unless you do something very dumb you will never encounter it.

I finally found it. awesome. but if we manage to kill it, is it the strongest monster in the game ? is Arulir Pack leader considered as more powerful or not ?

No. Who would believe in such nightmares?

So what I've basically done is copy/paste the data from http://andorstrail.irkalla.cz/0.7.0/monsterlist.php and put it into an excel table. Then I converted everything to numbers to be able to sort, filter and calculate stuff. Very useful
I quickly noticed, that highest BC and highest AC match Rijacksons earlier post and averages are similar, + most monsters were already in the game back then when the list was last updated, therefore decided that accuracy of the data should be good enough.

I've then made a small overview table of monster stats for block chance, attack chance, max. damage per hit, max. damage per round without criticals, max. damage per round with max criticals, damage resistance and health points.

For each of these values, I've determined:
[*]Average value amongst all monsters
[*]Highest value amongst the weakest 80% of the monsters (cut off top 20% of monsters)
[*]Highest value amongst the weakest 90% of the monsters (cut off top 10% of monsters)
[*]Max value amongst all monsters
[*]Strategic value (highest values most likely to encounter often due to monster locations, XP value and grind, critical situations because of swarming monsters, combination of high hit chance + high damage per round and/or crits, etc.)

Monster stats
Some max dmg per round insights of monster stats:
81 dmg/rnd with AC of 215, 96 dmg/rnd with AC of 145, 150 dmg/rnd with AC of 80. Anything above 96 dmg/rnd has AC of << 100, which is relatively easy to block. Therefore chose 96 as strategic value.

With Rijacksons chart, I then tried to calculate for each of these values and groupings, how high a stat (AC and BC) my character needs to block 50%, 75%, 80%, 85% and 88% of monster attacks as well as successfully land 50%, 75%, 80%, 85% and 88% of my attacks.

Goals for own character stats
How to read it:
Basically, you can look at your own stats and check how well you fair against monsters in general (the average ones, all except the top 20%/10%, even the highest or strategic monsters).

Example: You have 100 block chance. This means, you will block 80% of the monsters on average on all monsters. Though, average stats of monsters are typically lower than what you encounter end-game. 100 block chance would, however, still enable you to block up to 80% of all monsters (except the 20% highest attack chance ones) at least every 2nd hit in average.

Or the other way around: If you do a block-focused build and want to block even the toughest (highest hit-chance) monsters 80% of the time, you need 221 block chance.

It is similar for attack chance.

Regarding chances: The most dangerous mobs most commonly have 2 attacks, some 3, none more. Therefore, a block chance of 75% goes a long way already.
Though, for attacking, each % shortens the average time of fights, and therefore considerably increases your combat and grinding speed. Higher % does have a positive effect. Though, at high levels, try to decide what's more imporant, more AC or more damage Try to go the overall approach (AC + dmg) and think of "rounds needed to kill the mob".

My personal view:
Block focused builds I'll lift to at least 161 block chance, aiming for 206+. Ideal 265+.
Attack focused builds I'll lift to at least 294 attack chance, aiming for 309+. Ideal 330+.

For a balance between both, try to spin your head around how many level-ups you get, how many stats from equipment, and how much from skillpoints. Also keep in mind, one skill point is 4 level-ups. If you look at the stats of the skills, it's better to increase attack chance with level-ups and push block-chance with the dodge skill (if you have skill points spare!).

Also consider the damage resistance. Most mobs in general play/grind have less than 14. Therefore, 15+ damage per hit can kill these monsters. Though, toughest bosses need at least 22+ damage per hit. Keep that in mind. 100% hit chance doesn't help, if 100% of your damage gets absorbed

Health:
With a decent block chance (100 and more), I think 100 HP go a long way already, especially if you have some means to replenish your health. Some buffer is always good, though, and 150 HP is reasonable to achieve.
If survival is important and you want to ensure that nothing can one hit you (hardcore mode), even in the unlucky event of all attacks of that mob critting you, you need 151+ HP, more if they gang up and all get lucky Though, playing statistics, 151+ hp and good block stats will go a long way I'm sure. Again, buffer never hurts

Last comment:
Disregard the coloring and framed cells. It's only highlighting some personal thoughts to myself.