Torchlight: Infinite Selena 2 Autobomber Build Guide

To run an automated Selena 2 build in Torchlight: Infinite, you must link persistent area-of-effect spells to automatic trigger supports while maintaining enough unreserved mana to sustain rapid cast cycles. Reaching Level 89 provides the necessary talent points, sealed mana efficiency, and skill slots to loop damage passively as you move through enemy packs.

Core Trigger Mechanics and Mana Tuning

An autobomber automates combat by firing spells without manual inputs. Selena’s second hero trait provides offensive scaling that synergizes with persistent area spells, mobility skills, and cast-on-hit effects. Instead of stopping to hard-cast abilities, your movement triggers damage pulses that detonate surrounding monsters.

Keeping the automated loop active requires balancing two resource constraints:

Cooldown Recovery: Automated procs fire according to internal cooldowns. Reducing these cooldowns increases damage frequency and overall clear speed.
Mana Sustenance: Triggered skills consume mana rapidly. Reserving too much mana for passive auras leaves insufficient unsealed mana, causing the automated loop to stall. You must balance sealed mana modifiers with flat mana regeneration or mana gained on hit.

Skill Links and Trigger Structure

Distribute your skill slots across passive triggers, movement utility, defensive barriers, and supportive auras to maintain continuous automation.

Skill Slot	Recommended Setup	Function
Main Clear Skill	Persistent AoE Spell + Added Area Damage + Elemental Damage + Spell Amplification	Cleanses standard mob packs automatically as you approach
Trigger Engine	Cast on Focus / Auto-Cast Support + Secondary Burst Spell	Fires supplemental burst spells automatically on cooldown
Mobility	Leap Attack or Spiral Strike + Cooldown Recovery + Movement Speed	Traverses terrain quickly while activating travel-based buffs
Defensive Layer	Defensive Barrier or Frost Shield + Cooldown Recovery	Triggers emergency damage absorption against incoming spikes
Passive Auras	Elemental Amplification Aura + Precise Mana Seal Reduction	Boosts base spell output while keeping usable mana unsealed

Prioritize support gems that increase skill area and projectile proliferation. Wider damage coverage compensates for the lack of manual aiming.

Talent Tree Progression Through Level 89

Allocate points across spellcaster talent boards to reinforce damage scaling, area size, and sustain. Early boards should establish baseline life pools and base spell damage to prevent one-shot deaths in dense stages.

As you allocate points through Level 89, focus on these specific nodes in secondary and advanced boards:

Area of Effect Radius: Broadens spell boundaries so triggered bursts strike ranged enemies before they attack.
Trigger Cooldown Recovery: Directly shortens the interval between automated procs, increasing clear efficiency.
Mana on Hit or Kill: Replenishes mana instantly during pack clearing, preventing trigger failures mid-pack.
Elemental Resistance Penetration: Bypasses monster defenses on rare elites and high-tier Timemark stage targets.

Avoid skipping mana sustain nodes to pursue raw damage. If your mana empties during combat, your defenses drop and the damage loop halts completely.

Gearing Priorities at Level 89

At Level 89, shift equipment goals from basic leveling survivability to targeted affix optimization:

Weapons: Prioritize spell gem levels, added flat spell damage, and cast speed rolls. You can dual-wield caster weapons for maximum clear speed or equip a wand with a defensive shield if your resistances need stabilization.
Armor: Secure maximum life, armor or evasion conversion, and capped elemental resistances. Look for gear affixes that grant reduced mana reservation to free up unsealed mana for secondary auras.
Accessories: Use rings and amulets to fill remaining elemental resistance gaps, then stack flat damage and critical strike multiplier.

Playstyle Execution and Boss Encounters

For standard mapping, activate all passive aura toggles, use your movement skill to traverse the stage, and path directly through monster packs as they detonate.

When encountering isolated bosses, adjust your strategy to account for the autobomber's structural trade-offs:

Expect Slower Single-Target Fights: The build relies heavily on target-dense packs to generate on-kill and on-hit loops. Single bosses lack these extra procs, resulting in lower single-target damage output.
Maintain Mid-Range Positioning: Keep the boss within your spell triggers' radius while continuously sidestepping telegraphed boss attacks.
Handle Disengagements Carefully: If a boss forces you to retreat out of range, automated procs may temporarily pause. Re-enter the boss's proximity using your mobility skill to restart the trigger loop.