Hey man! Thanks for playing the game.
I spent time last night to improve the combat for the post-jam version we'll release as soon as the voting period ends. It was horrendous but I hope the improved combat makes killing small enemies like the bat and goblin a lot easier. We'll also work in a tutorial level or remake the first part of the level to be a tutorial, until you get the attack powerup.
For the post-jam, there'll be an upgrade on the left side which you'll need to progress to the right side.