The Hard Mode version of Zenara and Astralym is a different beast from the normal Tower Boss fight. Instead of a solo showdown, it turns into a full raid encounter with a Pal Box you can use to summon an army into the arena. The boss sits at Level 100 with 5,030,099 HP and no elemental weakness, so raw damage output and survival, not type matchups, decide the outcome.
Quick answer: Bring a Felbat-led tank team for personal survival, fill your raid party with 15 or more fully invested Necromus running Immortality, Legend, Diamond Body, and Serenity, then aim at Zenara in Astralym’s chest while breaking its wings whenever the charge warning appears. Let the raid party burn the HP pool while you stay alive.
Hard Mode turns Zenara and Astralym into a raid boss
Unlike the other Hard Mode Tower Bosses, this fight converts into a raid encounter similar to Bellanoir and Blazamut Ryu. That means you summon a dedicated raid team into the arena and rely on it for most of the damage while you handle survival and mechanics. Expect wide, high-damage area attacks that can wipe both you and your party if you cluster together.
To unlock this version, you first have to defeat Zenara and Astralym on Normal Mode. The reward for your first Hard clear is the Zenara Hat, guaranteed on the first win, along with the Psycho Gravity Skill Fruit.
| Detail | Value |
|---|---|
 HP | 5,030,099 |
| Level | 100 |
| Weakness | None |
| Unlock | Defeat Zenara and Astralym (Normal) |
| First-clear reward | Zenara Hat |
| Skill Fruit | Psycho Gravity |
Your personal team: Felbat life-steal tank
Your own party exists to keep you alive, not to carry the damage. The core idea is to tank hits and heal back through Felbat’s Partner Skill, which life steals based on the damage you deal. Because the healing scales with your damage, you stack Attack boosters to keep the loop going.
| Role | Pal |
|---|---|
| Active Pal |  Felbat |
| Support | Solenne |
| Support | Xenogard |
| Support |  Gobfin |
| Support | Gobfin Ignis |
Solenne, Gobfin, and Gobfin Ignis all raise your Attack stat, which increases both your damage and the amount you heal. Xenogard boosts damage from Energy Weapons like the Plasma Rifle. Recommended passives for this team are Vanguard, Stronghold Strategist, Reload Master, and Idiosyncratic.
The whole build collapses if Felbat dies, since you lose the life steal that keeps you alive. To prevent that, open the “Command Pal” option and set your Active Pal to Defensive so it stops charging into attacks and getting itself killed.
Build a Necromus raid party to burn the HP pool
Necromus is the strongest raid party pick for this fight thanks to high base stats and a powerful exclusive skill. Give it defensive passives to survive Astralym’s attacks and one cooldown passive so it can keep attacking.
| Pal | Passives |
|---|---|
 Necromus | Immortality, Serenity, Legend, Diamond Body |
Immortality, Legend, and Diamond Body are among the best defensive passives, while Serenity cuts the cooldown on Necromus’s attacks so it fires more often. For its moveset, Apocalypse and Sand Twister spawn a swarm of tornadoes that hit the boss’s giant hitbox many times over, and Twin Spears sends Necromus circling the boss, striking repeatedly until the attack ends.
| Skill | Type | Power | CT |
|---|---|---|---|
| Twin Spears | Dark | 120 | 40 |
| Apocalypse | Dark | 400 | 20 |
| Sand Twister | Ground | 500 | 24 |
Minimum Necromus investment
Each raid Necromus needs serious investment to survive the second phase and hit hard enough. Hit every one of these checkpoints before you summon them into the arena.
| Requirement | Target |
|---|---|
| Level | 80 |
| Pal Soul Upgrades | HP +20, Atk +20, Def +20 |
| Trust Level | 10 |
| Condensed | 4-Star |
| State | Awakened |
| Type | Alpha |
| Copies | 15 or more (depending on base size) |
If you raise your Base Pal Limit in the World Settings, you can bring more than 15 into the arena, up to 50 Necromus. A bigger raid party clears the HP pool faster, but be aware it can cause lag.
Weapons, gear, and consumables
The Plasma Rifle is the strongest weapon in the game and your default pick, especially with Xenogard boosting Energy Weapon damage. The Drone Launcher pairs well with an Orserk on your team or works as constant chip damage, the Megaboost Gun buffs your Active Pal, and the Mechanical Bow applies Burn or Poison through arrows.
| Weapon | Lv. | Attack | Durability |
|---|---|---|---|
 Plasma Rifle | 78 | 1860 | 25000 |
 Drone Launcher | 77 | 200 | 6500 |
 Mechanical Bow | 67 | 20000 | 2000 |
 Megaboost Gun | 63 | 250 | 400 |
Since your raid party carries the damage, prioritize survivability on your own build. Defensive accessories matter most here, so favor Warsect Terra’s Belt and the Silvegis Emblem, with the offensive Attack Pendant and Dogen Emblem being lower priority.
| Accessory | Effect |
|---|---|
 Warsect Terra’s Belt | Greatly raises Defense and Health |
 Silvegis Emblem | Raises your Defense and your active Pal’s |
 Dogen Emblem | Greatly raises your Attack and your active Pal’s |
 Attack Pendant | Slightly raises Attack |
For armor, run the full Ancient Armor set as a minimum, and upgrade to a higher-tier version if you have one. These are end-game enemies, so you want the highest Defense equipment available.
| Armor | HP | Def | Added Effect |
|---|---|---|---|
 Ancient Helm | 1200 | 500 | Neutral Damage Reduction Lv.1 / Dragon Damage Reduction Lv.1 |
| Ancient Shield | N/A | 2200 | None |
| Lightweight Ancient Armor | 2400 | 840 | Cold Resistance Lv.2 / Heat Resistance Lv.2 / Max Carrying Capacity Lv.4 |
Since the boss has huge HP and hits hard, use Defense food on both your character and Pal, with Attack food when you need more damage. Galeclaw Nikujaga raises Defense and Mammorest Curry raises Attack. Always pack Advanced Recovery Meds for extra HP regen and Revival Potions in case a Pal takes too much damage and goes down.
| Item | Purpose |
|---|---|
 Mammorest Curry | Attack food buff |
| Galeclaw Nikujaga | Defense food buff |
 Revival Potion | Revive downed Pals |
| Advanced Recovery Meds | Extra HP regen |
Attacks to watch and the 60% phase change
Once Astralym drops to 60% HP, it wraps itself in an explosive glowing light and shifts into its second phase. From that point its attacks gain extra effects and deal more damage. Watch the HP bar so the transition never catches you off guard.
Alongside four Astralym exclusive attacks, the boss uses a set of named skills you should learn to recognize.
| Attack | Type | Power | CT | Effect |
|---|---|---|---|---|
| Rocky Impact | Ground | 600 | 30 | Shakes the ground and lifts a massive boulder into the air |
| Holy Burst | Neutral | 700 | 30 | Wide explosion of light at and around the target |
| Psycho Gravity | Dark | 700 | 30 | Locks enemies with gravity, then slams them into the ground |
| Meteorain | Dragon | 700 | 30 | Drops countless meteorites, generating shock waves |
In-fight tactics
Performance and backup planning
This fight throws a huge number of attack animations on screen at once. Turn down your graphics settings before starting, especially on a low-end PC, where the effect spam can cause lag or even crashes.
There is a real risk your Necromus don’t burst the boss down before its second form starts killing them. Keep a back-up raid party ready so you can replace any Necromus that goes down mid-fight and keep the damage flowing.
The HP pool is enormous, but the fight is very winnable with the right setup. The only way to actually lose is to die, so focus on staying alive, hold the boss’s attention, break the wing charges, and let the raid party grind down the rest.
