Combat in Battlecursed is real-time and requires frequent switching between heroes to use their active abilities in order to most efficiently destroy Xelo Van's horde of minions. Each ability has a cooldown of varying length. Abilities do not share cooldowns, and there is no global cooldown on performing an action.
You may select a Hero and use their abilities with the mouse wheel and buttons, or you may use the pre-assigned hotkeys for using abilities without selecting a new active Hero. See the keybindings by selecting 'Instructions' in the game menu.
When assigning Heroes to your party, you will choose which Heroes to place on the front line, and which to keep in the back. Front line Heroes are more susceptible to close-range damage. The currently selected Hero becomes a greater target for enemy attacks. Manage your Hero placement and selection wisely in order to spread the damage taken throughout your party.