so u have health bars max is 100 and to gain more green orbs fall during the fight so touch it to regian 10 health. The max health for a bossfight is 250. the first boss has 100. Ring guy first fight you have to lose to him. However all the other bossfights could have phase 2. while ahooha is the only bossfight that has 3 phases. And thats it. Ring guy when he rematches (final boss.) has 2 phases. as you have to defeat him this time. When the enemys are flashing, hit the e key to hit them. Depends on their def. Max is 20.
