Achievements and puzzles go hand-in-hand, but unlike some of the more challenging experiences out there, Escape Academy 2: Back 2 School is one game that actually makes completing everything it is entirely possible without scouring the internet for ages.

Although most of the achievements tend to be tied to unmissable story progression and simply completing quests, there are still a number of side activities and secrets that you'll have to go out of your way to find if you want to achieve 100 percent completion.

Some of these achievements will also be much easier to complete while playing with a friend in co-op, especially when it comes to any challenges involved with scavenging across the entire academy to interact with every NPC and find all 50 herrings.

Required to complete the tutorial; the first can be found in the vent or the telephone booth.

Complete any side quest for the first time given by the other students, like the sudoku puzzle in the cafeteria.

After buying your first zipline in the courtyard, purchase and use the zipline in front of the school to reach the top of the Clocktower.

Clicking on an NPC will start a conversation that counts towards this, also persists on different save files.

"Die" from falling off a large height, drowning, or jumping into lava

The side quests are scattered across campus, which you'll need to complete to get enough Escape Bucks to progress already.

Gate found at the farthest end of the map from the school or from the Arts campus, requires 17 credits to enter.

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