Here is the full list of all 30 Dungeon Looter achievements.
Technical Guard (TG) 5 times in a row
Lights 10 explosive barrels
As adventurer, revive a friend with COOL SPEECH skill.
As a Ranger, fire a Snipe Shot that goes through 5 targets.
As a Magician, cast one Light Falls that deals 9000 or more damage.
As a Knight, perfrom Bulldoze skill that deals 2000 or more damage.
Drink 50 potions.
Consume 50 food items.
Smack 100 prop objects.
Defeat Processor Core (any difficulty)
Backstab with knife 99 times.
Perform high speed attack with spear 50 times.
Save up total 7777 LP or more in one run.
Drink 3 energy drinks at once.
Slash and deny enemy's rocket 4 times.
Finish normal expedition in less than 15 minutes.
Finish hard expedition in less than 20 minutes.
Have 30K money in town.
Finish forest fortress boss last hit with its own cannon ball.
Reach 50% master skill exp on Adventurer class.
Reach 50% master skill exp on Ranger class.
Reach 50% master skill exp on Magician class.
Accumulate total 50,000 class EXP (count from every classes)
Reach 50% master skill exp on Rogue class.
Accumulate total 120,000 class EXP (count from every classes)
Reach 50% master skill exp on Knight class.
Clear a 4-player sized expedition alone. (offline only, select difficulty adjustment +3)
Finish normal mode expedition with 0 skill upgrade and 0 item upon enter. (If multiplayer, everyone must do so)
Finish hard mode expedition with 0 skill upgrade and 0 item upon enter. (If multiplayer, everyone must do so)
Technical guard an exploding barrel, because it is so COOL!