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