Graze

Better tutorial:

1. Player hitbox (Blue circle): It's way smaller than your sprite would suggest!
2. Bullet indicator (White circles): Show's when and where incoming bullets will be able to hit you.
3. Graze indicator (Yellow circle): Graze close to bullets inside this ring without actually getting hit to build your energy meter. 
4. Attack indicator (Target): Targets the closest enemy within range. If you have at least one charged meter, it will light up green. Press attack to slash through!

Tips

• You're invincible while attacking, and any bullets you pass through are automatically grazed.
• Mobs spawned by the boss will grant charges when attacked. Yeah, there's no indicator for this other than a brief yellow flash. Oops
• Sleep is good