Google has "audacious" but I don't know if that tracks with what the VN is conveying.
Fearless suffers from the same problem as undaunted in that you can't be "more" of either. They're absolutes, the same way nothing can be "more unique"
'Undaunted' - very strange and obscure word choice. Google translate gives the translation for 'gan góc' as 'grit', which in English usually (apart from being a kin of sand) means 'determination'. Maybe 'determined' would be a better translation.