Clone Evolution offer review

This game seems fun enough with nice graphics but it takes too much time to complete this offer. I suggest to pass this offer unless you want to check out this game.

Update: it actually credited when I've got 5 purple heroes. 2 for perfect clones. 1 for leveling up. 1 for evolution and 1 for fragments.

Update 2: there is another offer available for this game with goal to collect 1 gold hero. This is terrible offer, because it depends mostly on luck, because you get gold hero either from gene lab with very low chance, or upgrade it from purple heroes, but only specific purple heroes which you also mostly get from gene lab. No blue hero can be upgraded to gold. I'm well over 1 month here trying to finish this task.



Terms: Install, Open & Collect 6 purple heroes.
Reward: $0.6 - $1
Platforms: Android and iOS
Offerwalls availability: AdGate, OfferToro, Adscend and others
Time investment: 2 days+
First time investment: TBD (1 day so far)
Rating: D (Not worth it)

Tips:
Ways to acquire purple heroes:

1. Use “Perfect Clone” scroll in Gene Bank
1. Acquire scrolls from Supply Depot when it is available
2. Collect Purple heroes fragments from various sources. Each hero needs 50 purple fragments:
1. As a rewards of passing Campaign levels
2. Buy from Supply depot for gold or tokens received from Arena, Guild, Tavern, Expedition
3. “Bonus” button for daily logins
4. “Bonus” button for leveling up (reach level 75 during current promotion)
3. Evolve hero in Darwin lab. You can  evolve some heroes from the set of lower grade heroes. See list of consumed heroes in evolution formula when you select certain hero in Darwin lab.