William and Sly Achievements Here is the full list of all 26 William and Sly achievements.Filter Achievement View View Image viewList view Sort by TrueSteamAchievement desc TrueSteamAchievement asc Achievement name desc Achievement name asc TSA Ratio desc TSA Ratio asc Gamers desc Gamers asc Steam order Date won desc Date won asc What are achievement flags? Click to find outApply 10 Mushrooms!This is only the beginning. Cave FoundYou found your first cave. 50 Mushrooms!Now it's an addiction. 100 Mushrooms!*Burp* 150 Mushrooms!But the fox is still hungry... 200 Mushrooms!Looking a little bloated, now. 250 Mushrooms!I guess they aren't toxic, then... 300 Mushrooms!That lady must be pretty upset by now. 350 Mushrooms!Furry feet doth shake the ground. 400 Mushrooms!More like a beach ball every second. 450 Mushrooms!It's more obsession than hunger. Lillypads!Floating is all the rage these days. Dragonflies!So graceful... Frogs!They look happy to be free. Pumpkins!Not your average gourds. Birds!Why not just sit in a tree and scream all day? Clams!The clam says, "......." Dandelions!Your neighbors love it when you throw them around. Fish!This is HIS lake. Octopus!He's a talented masseuse. Stag!Make a wish! Fairyflies!See how they sparkle... Speed Boost!Gotta go fast! Wings!Why walk when you can fly? The EndThat guy must have slept like a rock. Onembane!Now she'll really be mad, won't she?