The game isn't that hard if you know what you're doing.
You can easily complete almost all fights without using the so-called cheese. Fights created specifically for level 5, such as gith and bulette, can be problematic. In the case of the bridge, I failed to defeat them without escaping to the higher level, but this fight is not for level 4.
In the remaining fights I didnt use barrels or I didnt position myself to gain an advantage (of course when the opponent turned his back on his own, I used it).
There were quite a few tough fights, some I was lucky enough or otherwise (one shot from Flinda's crit).
The most important thing is to realize that the game is designed to let you rest after each fight.
