Yea achievements in imgflip would be a good feature.
I actually wrote some of them( because why not?)
I may have copied some from the other comments...
1) Imgfliper- You created an account! Welcome. (20 Pts)
2) Memer- You created your first meme. Good work! (20 pts)
3) Opinionest- 1st comment! (10 pts)
4) Newbie memer- Create 10 memes(5pts)
5) Just a normal memer- create 75 memes(10pts)
6) Pro memer- Create 250 memes(60pts)
7) the god of memes- Create 1000 memes(200pts)
8) Famous- You have 100 followers *googles how to handle fame*(100pts)
Did I just get a brainwave?
9) Rool breaker- Get banned on a stream(10pts)
10) Rebellious- Get banned on more than 2 streams (15pts)
11) Talk of the town- Your meme is on the front page!( 250pts)
12) Silly- You can't vote your comment, Silly! (5pts)
13) Happy birthday!- You completed your first year on Imgflip! Happy birthday! (75pts)
14) Veteran- Stay on imgflip for 2 years (100pts)
15) Superior- Become the owner of a stream. (50pts)
16) Trustworthy- become a mod on someone else's stream(25pts)
17) Checker- Approve a meme(10pts)
18) The Obedient- Your flag was approved(10pts)
I'm sure I can write some more
19) yeetus Feetus, this needs immediate deletus- Delete someone's comment/image
20) Oops- Delete your comment/image(5pts)
21) Good memer- Your image got 10 upvotes(10pts)
22) Oh no- Your image was disapproved/flagged(10pts)
23) Cool memer- Your image got 50 upvotes(20pts)
24) Funny memer- Your image got 100 upvotes(50pts)
25) Reader- You currently have 0 unread notifications. (5pts)
26) Disturbed- You have 100+ unread notifications. Gotta get reading those! (20 pts)
27) The attentive- Reply to someone's comment within 1hour (10pts)
28) SuperMemer- You made it into the leaderboard! WOW! (100pts)
29) The god- You are #1 on the leaderboard THAT IS AWESOME! (200pts)
30) Legendary- Were you online for 2 hours? (30pts)
31) Achiever- achieve your first achievement to achieve achiever achievement(20pts)
Oh no I'm running out of ideas :(
32) Out of ideas- Repost and image (10pts)
33) Positive- Upvote 10 memes(5pts)
34) the happy- upvote 50 memes(20pts)
35) Lovely- Upvote 100+ memes(50pts)
36) Annoying- Block someone (2pts)
37) Chatter- Memechat with someone( 10pts)
38) Fan boy/ Fan girl- Follow someone(20pts)
I need another brainwave to write more :(
39) Negative- Downvote an image (10pts)
(Did I just spend an hour writing this?)
If you have any other ideas tell me I will add it