The level economy
Holocure levels you by collecting XP orbs. Each level is a choice: a new weapon, an upgrade to what you have, or a flat buff. The choices you make early shape everything later, because upgrades stack on the same axis.
Compounding choices
Do not scatter. If your weapon is ranged, take ranged upgrades. If you are kiting, take speed. A build that reinforces one axis out-performs a build that touches everything once. Stat Ups from leveling raise HP, ATK, SPD, CRT, Pickup Radius and Haste.
When to take a new weapon
Take a second weapon when it covers your starter’s gap. A melee starter wants ranged backup; a ranged starter wants a melee panic button. With two max-level weapons you can trigger a Collab that frees a slot (see weapon synergy). Skills are picked through level-up and marked with a star; each can be upgraded up to three times.