W,S,A,D: Basic movement
Q,E: Move camera up and down
Z,X,Y: Moving an entity/model in certain direction
R: Rotate the entity/model
T: Turn Tile/Model 90 degrees
F: Flatten Floor
P: Play mode
SHIFT + F: Flatten ceiling
SHIFT + G: Generate room
G: Pick textures under cursor
ENTER: Carve tiles
ESC: Fill tiles
BACKSPACE: delete certain entity/model/tile
SHIFT: move stuff on the X and Y axis
CTRL + Z: Undo
CTRL + Y: Redo
CTRL + C : Copy an entity (Or Entities) CTRL + V : Paste an entity (Or Entities) SHIFT + Left Click: select multiple entities
The biggest map size you can make without having issues is 60x60 or 70x70 The amount of assets you can place in a level is 8,065. that is a lot for a java VM (Virtual Machine). Every tile you place counts as 1 asset. Be careful when making big rooms.(edited)
cribsheet: (for the texture painting tool)
1 key: paints whatever the currently selected texture is for that surface type
2 key: like an eyedrop picker, will grab the texture from the highlighted surface Shift+2 key: Opens the texture picker for that surface
ALT+dragging the mouse: raise/lower floor/ceiling