Return to the Lab: Experience Levels and Requirements

Guide to the "Return to the Laboratory" event
Recently, a new event, “Return to the Laboratory,” appeared in the game.
Many players do not understand the mechanics of this event. Here the advisor will explain everything in detail.
Interface Basics
The top center portion of the screen displays your Event Level and your current XP/XP for the next level. The higher the level, the better the rewards. There are 9 levels in total (from 1 to 9).
To increase the level, helicopter energy is consumed (propeller icon). For every unit of energy spent you receive 1 experience point. When the experience is full, click "Explore" to move to the next zone.
What you can get
Through exploration and one-tap attack you get:
Activity points - for event rating, rewards are awarded based on the results
Experiment Points - for exchange in the event store
Core Crystals - for upgrading the Mechanical Zombie Core
Zombie genes of different levels - to obtain skill books at the research institute
Various potions - to increase combat power in the event
Gameplay
It's simple:
When you have energy, constantly scout and attack with one click
You need to destroy all reconnaissance targets to begin the next one.
Players with low combat power can abandon strong opponents (losing only 5 energy)
Important: If the enemy is too strong, it is better to refuse. Spending 30 energy on finishing moves is not profitable - combat power grows very quickly with farming.
Zombie capture systemWhen a special icon appears, you can capture a zombie who will work for you.
Types of zombies (by production):
Energy - produces energy for research
Capsular - Produces capture traps.
Potions - Produces potions for combat power.
Zombie levels:
Level Regular capsules Success rate Normal 190% Elite 280% Boss 550%
Premium capsule - 1 piece = 100% success for any level (costs 288 diamonds for 10 pieces)
Recommendation:
For regular and elite - use regular capsules
For bosses - use premium capsules
Capture ALL zombies without exception - it's always profitable!
Factories
Captured zombies automatically go to the corresponding factory
Factory capacity is unlimited.
Resources can be collected from zombies in the “Resource Production” section
Experience requirements by level
TransitionExperienceTotal from level 11 → 22002002 → 35007003 → 41 0001 7004 → 52 0003 7005 → 65 0008 7006 → 710 00018 7007 → 810 00028 7008 → 910 00038 700
Don't forget to claim your daily rewards! The tasks are simple, free players can also complete them (except for “Capture 10 zombies” - requires a donation).
Donation levels
AttachmentsAchievable levelFree (no diamonds)4Daily purchase with diamonds5Battle pass 68 yuan~6Pass 68¥ + daily 6+18¥ + 4×30¥7Pass + daily 6+18+30+30¥ × 7 days8Pass + daily 6+18+30+30¥ × 7 days + 2×68¥ + 3×128¥9 (maximum)
This completes the guide. Good luck and may you encounter energy producing zombies!
Author: Councilor Goutou