Here is the full list of all 71 I Am 1 achievements.
"Don't all games have exp grinding tho? It get's better, just keep adventuring!" Trigger the "Grindy" Dialogue.
"You begin your adventure! You will reach TRUE videogame status with Baby steps! Or... Baby... slides...?" Exit town for first time.
"Looks like you like to JUKE EM!" Jump over 10 enemies instead of killing them (Before becoming Big)
"You took your first steps to something more than a lame pixel slider!" Reach the steps in the wilderness forest.
"That enemy's probably complaining about how unfair that was. But not you! Good Job!" Defeat any big enemy in one hit with a sword.
"If you stay ready, you ain't gotta get ready!" Survive the first punch from the Keh Keh Kid the first time, on first prestige.
"There's two ways to win a battle, be smarter, or be stronger. Doesn't matter tho because both equals better!" Reach Lvl 200 before the Desert on first prestige.
"Excellent! It seems you've realized the potential of the Arena." Complete any combination of Arenas, a total of 10 Times.
"Watch them enemies drop like flies, it's a lot of fun being that good!" Get a top score on any Arena, on any prestige.
"An impressive feat that not even the devs have yet to achieve, really!" Defeat the Keh Keh Kid on the first try, on any prestige.
"What a weird situation, but mission complete! Note, that tampering with the natural order of events may cause undesired side effects..." Defeat the E-King on any prestige.
"Now this is an upgrade!" Defeat multiple enemies with one charged blast.
"You got passed the first challenge of many to come." Defeat a Fat Spiked pixel.
"You don't just walk, you be struttin them new legs!" Get enough pixels to have functional legs.
"Knowledge is power! And knowing is half the battle!" Scan an enemy for the first time.
Defeat 100 Gobs
Defeat 300 Gobs
Defeat 1,000 Gobs
Defeat 100 Mini Slimes
Defeat 500 Mini Slimes
Defeat 2,000 Mini Slimes
Defeat 100 Slimes
Defeat 300 Slimes
Defeat 1,000 Slimes
Defeat 100 Gob Archers
Defeat 300 Gob Archers
Defeat 1,000 Gob Archers
Defeat 100 Spiders
Defeat 300 Spiders
Defeat 1,000 Spiders
Defeat 100 Skinless
Defeat 300 Skinless
Defeat 1,000 Skinless
Defeat 100 Orcs
Defeat 300 Orcs
Defeat 1,000 Orcs
Defeat 100 Cactinators
Defeat 300 Cactinators
Defeat 1,000 Cactinators
Defeat 100 Ex-Genies
Defeat 300 Ex-Genies
Defeat 1,000 Ex-Genies
Defeat 100 Guys
Defeat 300 Guys
Defeat 1,000 Guys
Defeat 100 Fire Coolios
Defeat 300 Fire Coolios
Defeat 1,000 Fire Coolios
Defeat 100 Golems
Defeat 300 Golems
Defeat 1,000 Golems
Defeat 100 Skelly Mans
Defeat 300 Skelly Mans
Defeat 1,000 Skelly Mans
Defeat 100 E-Soldiers
Defeat 300 E-Soldiers
Defeat 1,000 E-Soldiers
"The Dark Forest, this is as far as any sensible resident ever goes, but you are on an adventure so carry on!" Reach The Dark Forest
"It's Hot, and there is a lot of sand! And why is that cactus trying to kill me!? Welcome to the Arid Regions!" Reach the Arid Regions.
"The heat radiating from the ground can melt your skin off! And can you believe there are creatures here that actually like it!?" Reach the Lava Biome
"The West side of the abandoned E-Town. Not much of a military base anymore, it just looks like a strange town from some wacky movie" Reach West E-Town
"Feel tha POWA!" Reach Level 300
"POWA rushes through your vains!" Reach Level 1,000
"It's not quite over level nine thousand, but it's more than enough!" Reach Level 3,000
Defeat a total of 1,000 enemies
Defeat a total of 5,000 enemies
Defeat a total of 15,000 enemies
"You thought you were playing a game? No, the game just began son!" Enter the first Random Generated Area