Here is the full list of all 97 Pixel Sentry achievements.
Congrats! You won something!
You have gotten the item Fragmentation
You have gotten the item Two a shot
You have gotten the item Purpel Gem
You have gotten the item Asteroid Belt
You have gotten the item Blazing Pool
You have gotten the item Blazing Sprinkler
You have gotten the item Bomb Factory
You have gotten the item Bomb It
You have gotten the item Broken Sentry
You have gotten the item Chest Bonanza
You have gotten the item Circle Sect
You have gotten the item Drip Drop
You have gotten the item Wonder Blunder
UNLIMITED POWER!
You have gotten the item Flailing Flag
You have gotten the item The North
You have gotten the item Howling Gale
You have gotten the item Ghost
You have gotten the item Grow
You have gotten the item Heal Bot
You have gotten the item Holy Prayers
You have gotten the item Inpiring Hit
You have gotten the item Kamakaze
You have gotten the item Vamp
You have gotten the item Thunder
You have gotten the item Lightning Box
You have gotten the item Bouncing Lightning
You have gotten the item Natrue
You have gotten the item Plasma Shield
You have gotten the item Shield Augment
You have gotten the item Turret from the past
You have gotten the item Micro Robots
You have gotten the item Rain
You have gotten the item Rapid Fire
You have gotten the item Rapid Fire Turret
You have gotten the item Green Fairies
You have gotten the item Red Tape
You have gotten the item Split
You have gotten the item The Bat
You have gotten the item The Cross
You have gotten the item Tree
You have gotten the item One Becomes Many
You have gotten the item Blazing Bullet
You have gotten the item Pandoras Box
You have gotten the Combo item Nuclear War
You have gotten the item Gift From The Federation
You have gotten the item Cultist HeadBand
You have gotten the item Bombathun
You have gotten the item Retrieved Federation Technology
You have killed one enemy!
Get a total of 5 kills!
Get a total of 25 kills
Get a total of 100 kills
Get a total of 500 kills
Get a total of 1000 kills
Get a total of 5000 kills
Wow thats good!
You are rich!
wowoowowow
hax?
Complete level 3
Complete level 4
Congrats on that!
Complete level 6
Complete level 7
Complete level 8
Complete level 9
Heading to the pain cave
Complete level 11
Complete level 12
Complete level 13
Having fun yet?
Still having fun?
Complete level 16
Complete level 17
No skill only good build!
Get a total of 2 kills
Get a total of 3 kills
Get a total of 4 kills
Get a total of 6 kills
Get a total of 7 kills
Get a total of 8 kills
Get a total of 9 kills
Get a total of 10 kills
Get a total of 15 kills
Get a total of 20 kills
Get a total of 50 kills
You have gotten the item Back Up Generator
You have gotten the item Pocket laser
You have gotten the item Flast Earth Society
You have gotten the item The End Of The World
You have gotten the item Battery
You have gotten the item Divine Intervention
You have gotten the item Garden Of Eden
You have gotten the item Nuclear War
You have gotten the item Nukemal