"Fearsome bosses" refers to powerful and intimidating individuals in positions of authority who evoke fear or are difficult to deal with for their subordinates or employees. Full definition
Collect and craft a huge arsenal of weapons, and wield powerful magic to defeat fearsome boss pigs and their many minions. (andyemulator.com)
Twelve levels, DropIn / DropOut multiplayer, fearsome boss fights and crazy weapons! (gamergeddon.com)
It takes the platforming action seen in the first Metroid and adds a large game world to explore, more items to collect and plenty of fearsome bosses to contend with. (techradar.com)