Here is the full list of all 50 Loop-Loop DX achievements.
Pee continuously for 30 seconds.
Achieve every achievable achievement there is to achieve!
Beat zone 3 without taking damage.
Reach layer -1 with all 5 hearts in 'Legacy Mode'.
Beat zone 5 with minimum stats.
Beat zone 4 with minimum stats.
Get the money bag in zone 4.
Beat zone 3 with minimum stats.
Hack into Granny Edna's award-winning Pecan Sandy recipe!
Beat zone 2 with minimum stats.
Beat zone 2 without taking damage.
Get the money bag in zone 1.
Turn on the "Speech Sounds" in the pause menu.
You discovered what was beyond Layer 0 in 'Legacy Mode'!
Make it down to layer 10 in 'Legacy Mode'.
Make it down to layer 25 in 'Legacy Mode'.
Survive for 15 seconds in 'Legacy Bullet Hell Mode'.
Survive for 30 seconds in 'Legacy Bullet Hell Mode'.
Survive for 60 seconds in 'Legacy Bullet Hell Mode'.
See the good ending.
Defeat 'The Warden'.
Defeat 'The Warden' without taking damage.
Survive in 'Bullet Hell Mode' for 3 minutes and 30 seconds.
Survive in 'Bullet Hell Mode' for 3 minutes.
Collect 8 money bags within one round of 'Bullet Hell Mode'.
Survive in 'Bullet Hell Mode' for 2 minutes.
Collect 4 money bags within one round of 'Bullet Hell Mode'.
Survive in 'Bullet Hell Mode' for 30 seconds.
Survive in 'Bullet Hell Mode' for 1 minute.
Beat zone 6 in 'Adventure Mode'.
Rescue Vektor.
Get the money bag(s) in zone 6.
Acquire your first refund at the 'Ship Shop'.
Buy everything from the 'Ship Shop'.
Own the Floppy Disk without being in debt.
Beat zone 5 without taking damage.
Beat zone 5 in 'Adventure Mode'.
Get the money bag in zone 5.
Beat zone 4 in 'Adventure Mode'.
Beat zone 4 without taking damage.
Go into debt.
Beat zone 3 in 'Adventure Mode'.
Get the money bag in zone 3.
Obtain the laser weapon!
Beat zone 1 without taking damage.
Beat zone 1 in 'Adventure Mode'.
Make your first purchase at the 'Ship Shop'.
Beat any zone while have the two-shot split. (Excluding zone 1!)
Beat zone 2 in 'Adventure Mode'.
Get the money bag in zone 2.