Basically just a harder version of the example boss Left and right keys -- Move Z -- Jump / Select X -- Attack Up / Down + X -- Slash Up / Pogo A -- Heal F / F+Up / F+Down -- Vengeful Spirit/Howling Wraiths/Desolate Dive C -- Mothwing Cloak / Dash / Shade Dash Z in midair -- Monarch Wings / Double Jump If an ability isn't activating as intended, try changing it in the Options menu. You can also disable the training boss in Options and edit health values under Stat Tweak.
V1.1 More animations and slight changes for phases 1 and 2