Most of the achievements in the game are self-explanatory. There are a number of achievements (mostly references to other games or media) that don’t clearly state their requirements; these will be listed here. These achievements all have a green text in the achievements menu, but there are also a few achievements with a green text that are self-explanatory, which will therefore not be listed.
Blast like a fireball
Kill 15 monsters with one gem bomb.
I Never Asked For This
All my aug points spent
Complete a level with 0 unspent skill points (i.e. all points spent).
Green Eyed Ninja
Entering the wilderness
Enter field N3.
Spread the poison
Have every monster on the battlefield poisoned at once.
And it’s bloody too
Win a battle with only trap kills (not poison).
Splash Swim Splash
Full of oxygen
Fill your inventory with blue gems (any grade).
Put your HEV on first
Win a battle with only poison kills.
Rook to a9
In field H1J, build a tower where the a9 tile would be on the chessboard (see below).
Hope has fallen
In field T4, destroy all 8 dwellings.
We Just Wanna Be Free
More than blue triangles
In field K3 endurance, break open all 3 sealed g2 blue gems.
Uraj and Khalis
Activate the lanterns
In field J2T, free both sealed gems (call waves early for mana) and place them in the lanterns next to the shrine (see screenshot below).
Break your frozen time gem bombing limits
I’m not sure of the exact criteria, I assume it is for throwing a whole lot of gem bombs while the game is paused. If you know how many exactly please let me know.
Deckard Would Be Proud
All I could get for a prismatic amulet
Have a g12 gem of each color in your inventory.
Nine slimeballs is all it takes
Fill your inventory with 12 g12 green gems.