Here is the full list of all 30 DUSK achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Open Duskworld
Watch the credits to the end
Earn the 'Completionist' award in every level
Pick up a bar of soap in each level
Get past wave 20 in Endless Mode
Get past wave 10 in Endless Mode
Get past wave 5 in Endless Mode
Kill Intoxigator while intoxicated
Neutralize Chomper
Telefrag the Guardian
Find Lavender's secret
Find Dopefish
Find 'Wife of Intoxigator'
Find Rachael's secret
Reach E3MS
Reach E2MS
Reach E1MS
Earn the 'Low Tech" award
Beat par time in a level
Earn the 'Untouchable' award
Beat a level on 'Duskmare'
Complete all three episodes
Complete episode 3
Earn the 'Pacifist' award
Earn the 'Completionist' award
Complete episode 2
Use cheats
Kill an enemy by spinning your weapons
Complete episode 1
Find a "You aren't supposed to be here go away" sign