Perk Guide and Overview
Royal Mint
Royal Mint is a good perk for mid to late game in Eternal Trials. It gives extra gold each day based on your castle level. Pick it after stage 10 unless it comes with other great perks.
Arcane Towers
Arcane Towers is very important in late stages of Eternal Trials. It boosts tower range by 20% and damage by 33%. This helps deal with strong enemies like elite ogres and spiders. Consider picking it unless it’s in the very early stages.
Heavy Armor
Heavy Armor gives you 250% more health and 35% more healing. It’s amazing in Eternal Trials and part of a strong combo with God’s Lotion and Healing Spirits. This combo lets you play greedy early and save lots of gold. Always pick Heavy Armor when you see it in Eternal Trials.
Castle Fortifications
Castle Fortifications makes your castle stronger and attack faster. But it’s not that important in Eternal Trials. Only take it if it comes with other good perks.
Ring of Resurrection
Ring of Resurrection revives you and your units the first time you die each night. It can help you survive tough early nights in late stages of Eternal Trials. But it takes planning to use well. Consider it after stage 14.
Commander Mode
Commander Mode makes your units and buildings deal 40% more damage, but reduces your damage by 60%. It’s not good in Campaign Maps, but becomes a must-have in later Eternal Trials stages to keep up with strong enemies.
Architect’s Council
Architect’s Council unlocks building options from the next castle level right away. This gives you more economy and army options early on, which is very helpful in Eternal Trials. It’s a fantastic perk that improves your starting choices on most maps. Pick it when you can.
Warrior Training
Warrior Training boosts your weapon damage each night, up to 100% on the final night. It’s mainly used for maximum mutator runs in Campaign Maps. Don’t bother with it in Eternal Trials.
Castle Blueprints
Castle Blueprints gives walls and towers 50% more health. It’s okay in Eternal Trials, especially if you have Emergency Repairs. The tower health isn’t that relevant though.
Gladiator School
Gladiator School trains units 75% faster. Its main benefit is getting your hero back faster if they die. But overall it’s not that important in Eternal Trials due to slow unit speed and destroyed buildings stopping the perk.
War Horse
War Horse makes your horse faster and deal damage when you run over enemies. But it hurts you a little too. It’s great in Eternal Trials because you have lots of health from other perks. It helps against big rushes of weak enemies in the first couple nights. It can also distract strong enemies better. But it’s not a top priority perk.
Glass Cannon
Glass Cannon makes you deal way more damage but have way less health. It’s good in Campaign Maps where you need lots of damage. But in Eternal Trials, survivability is more important. Always turn it off if it comes with another good perk in Eternal Trials.
Big Harbors
Big Harbors is one of the best economy perks. It makes harbors stronger and start with a boat. Getting more gold early is super valuable because you can reinvest it and make even more later with Interest. Pick it early in Eternal Trials and in some Campaign Maps.
Elite Warriors
Elite Warriors gives your units 50% more health. It combos well with Healing Spirits and Health Potions to keep them alive longer so they can deal more damage. It’s solid but not as good as straight damage boosts. Get it in the middle of an Eternal Trials run.
Archery Skills
Archery Skills increases archer range and projectile speed. It mainly helps Hunters and Dragon Rider kill air units before they cause problems. But it’s not a big damage boost overall. A lot of Eternal Trials runs can skip it.
Faster Research
Faster Research makes all your research go quicker and cost less. This lets you focus on economy early and still get key upgrades later in Eternal Trials. Start considering it around stage 10.
Fortified Houses
Fortified Houses buffs level 2 houses a ton, making them shoot fast. With Resilient Residences, it creates a great economy/defense hybrid, especially on certain maps. Helps you survive greeding economy. Good for rounding out your defense in Eternal Trials but not top priority.
Pumpkin Fields
Pumpkin Fields is another top tier economy perk. Extra gold from mills compounds later with Interest. The health keeps them alive in Campaign. Get it ASAP in Eternal Trials and some Campaign Maps.
Healing Spirits
Healing Spirits boosts all healing you get. It’s part of a combo with Heavy Armor and God’s Lotion that lets you play super greedy in Eternal Trials. Very strong with Magic Armor once you have it.
Ice Magic
Ice Magic makes slowing effects much stronger. There aren’t many slows, but Ballista Spire with this can nearly stop scary things like elite ogres and rams. Nice in longer Eternal Trials but you don’t always need it.
Melee Resistance + Ranged Resistance
Melee and Ranged Resistance are your only resistance options on some Eternal Trials maps. They become critical after stage 10 to keep your army fighting longer. Get them in the late game if you can.
Power Tower
Power Tower is amazing for boosting a single Ballista tower’s damage through the roof. Makes it a sniper that can one-shot big threats and save you lots of gold. Always get it if you can in Eternal Trials. Also good on one Campaign Map.
Treasure Hunter
Treasure Hunter gives some bonus gold in the last few waves. But it’s too little, too late. By then you’ll have tons from Interest anyway. Almost never worth it.
Sustainable Mining
Sustainable Mining is the worst of the economy perks. The health is okay but the gold comes too slowly, even compared to Pumpkin Fields on a good mine level. Skip it.
God’s Lotion
God’s Lotion makes your health regen faster and kick in sooner. Part of that essential greedy Eternal Trials combo but worse than Heavy Armor overall. Get it mid run if you can.
Melee Damage
Melee Damage only really helps a couple units and your King, who doesn’t attack much in Eternal Trials. Very low priority there.
Anti-Air Telescope
Same with Anti-Air Telescope. Other tools handle fliers just fine so it’s not needed.
Health Potions
Health Potions gives good sustain and combos with other healing. Solid mid run pick for Eternal Trials but not the best.
Ranged Damage
Ranged Damage is nice for your towers but a bit worse than the top tier tower buffs. Still good later on though.
Stronger Heroes
Most maps don’t have Hero Quarters so Stronger Heroes isn’t very important. Only go for it if you really like a certain hero map and have Architect’s Council.
Loan
Loan is free gold to kickstart your economy. Combos great with Interest. Core for any score run in either mode.
Elite Towers
Elite Towers bonus goes away fast so it’s unreliable. Even though the damage is nice, it’s not usually worth taking.
Ancient Shrines
Ancient Shrines takes a lot of bodies to power up and only helps on a couple great maps. Might be okay super late but skip otherwise.
Lighter Materials
Lighter Materials helps in maximum mutator Campaign runs but is barely useful in Eternal Trials.
Spell Scroll + Daredevil + Relentless Research
Spell Scroll, Daredevil and Relentless Research are just bad. Never get them.
Emergency Repairs
Emergency Repairs and Castle Blueprints combo to make your walls super tanky. Good stuff but not the absolute top picks.
Interest
And Interest is the perk, the legend. Making your gold multiply is key to the best scores in any mode. Always always always take it. It defines the meta.
Relentless Research
Relentless Research only works on one map, Wildbach. And even there, you can usually wall up before needing to research. So it’s a very situational perk that’s almost never worth taking.
Explosive Walls
Explosive Walls sounds cool but has some issues. Your walls shouldn’t be breaking much in Eternal Trials if you’re playing well. And the explosions aren’t that impactful against big enemies that will just keep going. It’s better on certain maps but overall pretty skippable.
Resilient Residences
Resilient Residences is great with the Fortified Houses perk. Together they make your houses super tanky and give good economy, especially on specific maps. This combo lets you invest more in economy early while still being safe. It’s a solid mid priority pick to make your overall defense better in Eternal Trials.
Timber Scaffolding
Timber Scaffolding seems whatever but can actually be clutch. In the super late Eternal Trials stages, you might desperately need a high tier tower on night 1-2 to hold off a crazy push. This perk enables that, giving you a chance to stabilize. It’s not useful early on, but keep it in mind as a later pick that could save a run.
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