Lingering Echoes - Event Operations and Farming Guide

Event Currency:

• Event Currency only drops from Normal Event Stages.
• Total needed to clear shop: 6275 (not including Furniture Parts)
• Total from Event Missions: 1510
• Total from First Clear rewards: 850 (370 from normal Stages 480 from EX stages)
• Remaining currency needed from normal Event stages: 3915
• Currency drops at a rate of 1:1 for sanity spent,  so 3915 Sanity is needed on normal event Stages
• Sanity required for First clear of EX and Challenge mode: 240
• Total Sanity required to clear the Store: 4155
• One week of Annihilation will require around 125 Sanity.
• Total Sanity required is 4280
• The event runs for 2 weeks, so natural Sanity regen supplies 3360.  The weekly mission Top pots give an extra 240 per week, for a total of 480, or 720 if you saved from the week before.  Total possible of f2p regen is about 3840
• Natural sanity generation will NOT be enough to clear the shop.  F2P players should try to save sanity pots from previous weeks and spend currency efficiently. 
• Monthly Pack purchasers will be able to clear the store.

T3 Materials Farmable From Event Stages

• LE-7: Solvent
• LE-6: Grindstone
• LE-5: Sugar Pack

Farming efficiencies (source): Sugar Pack > Solvent > Grindstone. 

To see how many of these Materials your Operators might need, check the material pages or the Planner here:

This Page shows the Operations available during the Lingering Echoes - Event.

Trust bonus on Event stages

New Enemies and Mechanic

Challenge Conditions: (Credits: Iana)

• EX-1: Guard & defender ban
• EX-2: Friendly ATK -35%
• EX-3: Slugs become explosive spiders
• EX-4: 2 extra casters appear
• EX-5: Enemy +30 ASPD
• EX-6: 7 squad limit
• EX-7: Enemy +30% HP
• EX-8: 8 tiles are banned (1,1)、(1,2)、(1,3)、(1,4)、(1,8)、(1,9)、(1,10)、(1,11) Additionally, all 8 CMs apply a 20% buff in ATK, DEF and HP for all enemies