The so called "no-loss" concept (whole game) is wrong and stupid.

[Zechnophobe]

So, why No Loss in the first place?

It's pretty simple really. In every single fight you go up to, not getting killed, while killing the opponent, is the general goal. Reduce casualties, increase lethality. This isn't specific to the hardcore no-loss players, but rather what everyone does. I'm sure we've all been quite pleased at a fight where we managed to not lose a single troop and think 'yeah, that went really well!'

After you do that for a while, you start to identify certain types of enemies as causing you more problems than others. Ugh, Alchemists are a pain, they do poison and/or fire damage for many turns in a row, and are hard to prevent. Then you learn about target, or spell shackles, and suddenly you win those fights without losses as well.

Heck, you might even get into some really good combo's. Stone skin on griffons, then magic shield, and inquisitors to ress any that die... combined with target? Your Mage LOVES this! Any suddenly a lot of fights you win without casualties.

Once you start getting really good at finding strong things, and how to win more and more slanted battles, it eventually becomes "What if i could do this... in every single fight in the game? Like... never once screw up?" And thus, no-loss is born.

For the same reason some people play Legend of Zelda without picking up a heart container, or do speed runs of half-life, or whatever. It's the added fun, the challenge of it.

That's why we try to no-loss.