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