Having routed the enemy, I triumphantly returned — and they shall call me this!
Literal
Enemy [object-を] kicking-scattering, triumph-returned I [topic-は] everyone [by-に] this [quotative-と] called [passive-れるんだ]!
蹴散らし ('kicking and scattering') is a dramatic compound verb. 凱旋した (がいせんした, 'returned in triumph') is the military/heroic term. 俺 is the masculine first-person. みなにこう呼ばれるんだ ('I'll be called this by everyone') sets up a dramatic self-naming. The whole sentence is boastful warrior narration — probably from a game, anime, or fantasy setting.