Al right a bunch of achievement suggestions.
Extra tiers: Have quest points (100 is the current highest tier, and imo that's very low) Collect 25 Gaming achievements (higher tiers than 25)
Entirely New:

Ooh, I like these!
I hope they would be able to make a bunch of these retroactive though, especially jobs or else that would take forever if most of your pets had their set jobs. Zapping every experiment pet though, I can already feel my eye start to twitch :P
Great suggestions!
That darkonite one XD
I especially like the vending one; Maybe have a separate achievement for 500 vends of each machine and then a meta achievement or whatever word they use for getting all of them completed?
~~~Selling my literal soul for this~~~
I only like the vending one if they can make it retroactive (the rest are great though). I know staff is trying to limit vending, so I don't see that as being something they'd want to add in to encourage more people to vend :x

teased me about a Pacific Rim title.
Me want it okay.
Could we have more battle ones maybe? Stuff that requires us to go above and beyond on wins - like beat Recycle Beast 50 times, 100 times, 200 times etc - that is otherwise pretty pointless unless you're bored. Wouldn't mind to see these spaced across the difficulties, to help shine a light on some otherwise forgotten challengers.
All these achievements are great. Especially the quest points one........there DEFINITELY needs to be higher tiers. I have close to THREE THOUSAND...
I love these ^_^ thank you for posting this :) The hustler has nice title potential, something to the effect of 'getting swindled' or 'every day I'm... getting hustled' lol isadork
I second the battle achs, the easy challengers become health restorers for me, but it would be funny to have an ach for defeating a certain low opponent too many times.
Bunch of title ideas:
'Why ya hittin yourself?' or 'Fighting with myself' for aboxalypse
'Guess I'll go eat worms' for arnold
'Kicking butt' for buttwings
'Making diamonds' or 'It's a coeli world' for coeli (I dunno coal puns :P)
Everything I come up with for eclipse is especially corny...
'IT'S ROCK PAPER SCISSORS!!' or 'Smash, Cut, Smother' for pock saper riscors
'Can't even' 'YES I CAN!' for technicant
'Power outage' for willowisp
Also, for defeating an opponent in one hit, 'One hit wonder' tiers with a high tier having a Title: 'Pick on someone your own size'
Also, I don't think my idea warrants it's own topic so when I saw this, I was hoping if you like it you would add it to your list. For the scratchcard all blanks ach, I feel like there should be a title, maybe not for the first time, but 10 or something 'Drawing a Blank' ^_^ It appeals to the airhead in me heh
hmmm... I didn't realize I was so into the titles....