Here is the full list of all 8 Undercroft warriors achievements.
The forces of hell won't wait for you!
Congrats! You just got your 1st 100 000 points in a single run! ...But don't you think you can go higher?
You just got your first 1 000 000 points in a single run! That's more like it! But I still think you can go higher...
5 million points! You're really getting your groove! But I'm pretty sure you can get even more!
6 666 666 POINTS! IF THOSE DEMONS HAD BRAINS, THEY'D FEAR YOU! EVEN MORE BLOOOODSHEEED!
You just killed the wyrm! That thing was tough, was it...
You just killed the plague doctor! All those bullets can get kind of overwhelming...
Lucky! You got two satellites at once from one drone!