The Collaborative International Dictionary of English v.0.48:

Heroical \He*ro"ic*al\, a.
   Heroic. [R.] --Spectator. -- He*ro"ic*al*ly, adv. --
   He*ro"ic*al*ness, n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

heroically
    adv 1: in a heroic manner; "he become reconciled to not dying
           heroically in her arms"

Moby Thesaurus II by Grady Ward, 1.0:

32 Moby Thesaurus words for "heroically":
   audaciously, boldly, bravely, bulldoggishly, chivalrously,
   courageously, daringly, dauntlessly, doughtily, fearlessly,
   gallantly, gamely, gutsily, hardily, intrepidly, knightly,
   like a man, like a soldier, manfully, mettlesomely, pertinaciously,
   pluckily, resolutely, spunkily, stalwartly, stoutly, tenaciously,
   unfearfully, unfearingly, valiantly, valorously, yeomanly