Скачать или смотреть Hall of Trials 2nd Version ( After Revamp ) Normal Mode Astromancer Elena 5 Alternative 2 SSS Elvira

The main tips:

Take all or some of the special advantages if you can
Exhaust the boss as fast as possible to maximize damage and defense
Make sure that your heroes are quite sturdy
For better chance of survival, bring reliable healer or lifesteal heroes or both
Don't underestimate the enemy
Cleanse your heroes from debuffs as fast as possible and don't rely on buffs and debuffs too much
Bring at least one hero with a non attack skill and make sure that it is available in exhaustion mode to gain exclusive ability

The tips against Astromancer Elena Second Version:

Any focus will be nothing (won't increase). So, don't bring any hero with it except if it isn't matter for you.
Her undispellable buff negates dual attack and extra attack. So, don't rely on that. You can bring heroes that counterattack if you want.
-Bring at least one hero with counterattacking stance (ex: Senya, Twisted Eidolon Kayron, Aria, Ervalen), no matter whether it is manually or automatically (make sure that it is a buff, not a passive skill) and place him at the front (to dispell cajole debuff which only will be inflicted on the foremost hero and can only be dispelled by counterattacking by counterattacking stance. By dispelling it, you will increase the gauge by 60%. By keeping it, you will increase combat readiness of all enemies by 100% every time the foremost hero uses a skill).
Ability to increase combat readiness is negated. So, bring fast heroes instead.
Don't rely on healing too much, cause its amount will be reduced.
Place thief hero at the back row to gain the special buff. He will get his ability to land a critical hit negated. In exchange, he will land more damage and ache debuff two each time he attacks on the boss which will increase damage she suffers.
The damage you will receive isn't very big. So, no need to focus on healing nor defending too much. But, don't underestimate it too.
Bring at least one hero that land aoe skill often to increase the thief hero at the back row's combat readiness and decrease others' and grant him a special buff that increase his damage.