There are six secret achievements in Marvel Super Hero Squad: Infinity Gauntlet for the Xbox 360 for a total of an additional 80 gamer points. Here is the list to help you get them.
If you’re looking for the full list of achievements, check out my Marvel Super Hero Squad: Infinity Gauntlet full achievements list.
Jump Hero! (10 points) – Barrel Jumping Hero
Lost, Found, Then Lost Again (15 points) – Defended the Helicarrier from assault… but lost the Infinity Stones
Nothing is Forever (15 points) – Saved Super Hero City and redeemed Silver Surfer
Patience is a Virtue (10 points) – You waited calmly in the Grandmaster’s Green Room
The Large One! (15 points) – Saved the Skrull Throne World from Galactus
The Overmaster’s Underworld (15 points) – Infiltrated Thanos’ Hideout