More Achievements is a mod that adds a huge amount of new achievements, (68 so far!) each with their own custom art. Achievements range in difficulty from progression (you get them as you play through the game and try new things), to unique experiences (like killing a spawner with a turret), to pure difficulty/grind based ones (achieve one RPM). Achievement names even contain references to other games and pop culture/memes!
The full list is way too long to place here, so just take a look at the ingame list once you've installed the mod, or the readme file. Some of the art right now isn't fully final, but I plan on improving them over time, as well as adding all new achievements. If you have some suggestions for some, don't hesitate to let me know.
If you encounter any bugs, drop a topic in the discussion section. If you don't get a prompt response, try messaging me on reddit at /u/Gangsir, I check that far more often.
Credit to Bilka for some of the art and keeping the mod up to date for 0.17.