Thank you for guide! Hope there will be more

Glad to hear it helped friend !

I also found that some fights could still be dangerous even with this strategy (maybe the game has gone through some balance, I don't know), so better prepare ~10 armor portions in battle to ensure armour no less than 4 before the enemy attack.

I was going to say, what the heck is this "juggernaut" card? All I have is the Armadillo card! NOW it makes a lot more sense! Thank you @Distemper!

By the way it seems the english translation of the cards are not accurate:

They should be:

1. 'Fist bump'
2. 'Divine treatment'
3. 'Armadillo'

Thanks it helps a lot

Personally, I actually managed to complete it without using potions. I restored HP a couple of times during the final boss fight and in some other situations. Having a reserve of HP helps in case you still get hit, and there are situations where enemies hit in a way that completely removes all the shields that the "Juggernaut" applied. So, if you don't really want to use potions and strategize too much, you can simply follow the build from the guide. However, the suggestion from the commentator below is also good; it will shorten the time in battles, but be attentive since, as far as I remember, potions have a cooldown.

Additional explenation how shield work with Armored Knight:
- We play a card giving us 4 magical armor and 4 physical armor, then we play our other cards with heal if needed, if not then dmg.
- Enemy hit once and we are left with 1 armor
- Enemy hit second time and we have no armor, but dont lose hp
- If the third atack is physical we play small armor potion to block whole attack. In some cases oponents will play one magic attack and two physical attacks (then we dont need to play the potion beacause magic armor will block the third attack)
- We don't lose hp, so on our turn we can play armor once for 5 mana, and then attack as we please.

In case enemy play 4 attacks instead of three then we would armor -> heal -> attack on those turns. Otherwise we can play armor -> attack -> attack based on what attack card we use and the amount of int we have.

What I would add to this build is to buy armor potions for 30g which makes it easier. All attacks on el diablo deal 3 shield dmg, but the game does not take into account the amount of armor we really have. So when enemy is about to attack, hit the potion to have 1 armor and it will block the whole attack. Armor potions can be used during the oponent turn which allows us to focus less on healing and more on dealing dmg.

The game in general is beatable at around 40 levels and there are only two difficult fights that sometimes seems random because of the bug on enemy shield stacking.

The other option for the build is to get Armored Knight and then use the card for shield, add healing and play the card with 5% of chance to deal 25%dmg. The stats then will be based more around INT with something like (we focus on int and potion spam):

Health: 250
Str: 40
Int: 130

You can experiment, but with this build, you will close without any problems at all. This guide shows the points at the maximum level.

MAX LVL IN "EL DIABLO" - 50

You may only have problems with the final boss, but by then we'll have plenty of cans.

is there a more optimal stat spread than the one shown?