Here is the full list of all 21 Weakless achievements worth 1,000 gamerscore. It takes around 2-3 hours to unlock all of the achievements on Xbox One.
Detach all rotten pipes to save bastion's heart.
Paint all the views that Deaf enjoyed.
Reach your target destination.
Watch all micro stories recorded by ancients.
Play on all instruments in game.
Help Deaf to go through press machines.
Find your way to ancient city.
Finish canals puzzle.
Flash all resin-powered objects in game
Discover ancient ruins.
We've seen things that you weavelings wouldn't believe.
Get out of creepy jungle.
Scare away sleeping wurms
Finish pergolas maze
Safely cross through the waterland.
Power up ancient technology.
Finish handpan puzzle.
Taken part in weavlings' ritual.
Paint a poser in village.
Meet the Heroes and discover their skillsets
Have you seen what I've heard?