Laboratory: how much to donate for the required level

Laboratory Guide

Donation in the Zombie Laboratory event:
Depends on what level you want to reach.
If you only need level 6 for both types of decor, then BP is quite enough.

If you want to spend 15,000 energy on the Red Zombie skill, then you will need:
BP + all diamonds + daily offer for $1

• 1-3 offers for $3 depending on your luck in capturing zombies.
  You will also get level 7 if I remember correctly and 10 red skill shards.

In the last event, I spent a total of $20 (BP + $1 daily + $3 pack) to reach the 15,000 energy spent in the event.