I just finished this achievement half an hour ago, 7/25/17, and I was rewarded with a classic blue and purple sentinel pet. It's also a bit bigger than the Mini Starktech Sentinel. I'm not sure what went wrong with the previous poster, but I received the correct pet. The pictured pet for this reward on this site is incorrect as of this moment.
I have done this achievement with patience and I had it for more than half and reward give me that horrible sentinel. I would have put something better to the sentinel I bought with credits http://marvelheroes.info/item/1823/
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I have done this achievement with patience and I had it for more than half
and reward give me that horrible sentinel.
I would have put something better to the sentinel I bought with credits
http://marvelheroes.info/item/1823/