Beyond weapons, upgrading Isaac's RIG and his Stasis/Kinesis modules is paramount for survival. Power Nodes are a finite resource, so prioritize wisely.
RIG Upgrades:
- Health: Always a top priority. More health means more survivability. Upgrade this consistently.
- Armor: Increases damage resistance. Less critical than health but still valuable.
- Inventory Slots: Essential for carrying more ammo, medkits, and items. Upgrade as needed.
- Oxygen Tank: Crucial for zero-gravity and vacuum environments. Upgrade early if you struggle in these areas.
Stasis Module Upgrades:
- Energy Capacity: Allows for more Stasis shots before recharging. High priority.
- Recharge Speed: Reduces cooldown, letting you use Stasis more frequently. High priority.
- Duration: Increases how long enemies are slowed. Valuable for tougher encounters.
Kinesis Module Upgrades:
- Range: Allows you to grab objects from further away. Useful for puzzles and combat.
- Damage: Increases damage when throwing objects at enemies. Less critical than Stasis upgrades but can be useful.