courage of one who likes hard difficulty

one who likes to tackle difficult problems or issues, adventurer

encourage

take courage, dare

encouragement

to muster courage (for), to make bold (to), to dare, to endeavour, to design

encourage

nihilist

mean-spirited, base, low-minded

high courage and daring, big spunk, glorious boldness

encouraging

moderate, temperate

extremely courageous

nerves of steel, courageous, bold, daring

mean-spirited, low courage, discouraged, weak

courageous, spirited, enterprising

trial of courage

courage-breaking

discouraging, daunt, deject

courageous, bold, daring, high-minded, ambitious

difficult, hard, arduous, laborious, troublesome

difficult to traverse, rugged, hard, arduous, troublesome

courageous, ambitious, morally courageous, mentally vigorous, determined, strong-minded, high-minded

high on courage

coward

realist, a person who accepts a situation as it is and is prepared to deal with it accordingly

power, ability

Those who like variation, innovation