Make sure to save your game before trying some of the debugging hotkeys because they might cause a crash.
List of Hotkeys[]
General[]
LeftMouseButton: Select
RightMouseButton: Move / attack / cancel targeting
Space: Next task
Ctrl+Space: Force end turn
Tab: Next idle unit / next city
Shift+Tab: Previous idle unit / previous city
Enter: Chat
Abilities and Items[]
Q: Unit ability 1
W: Unit ability 2
E: Unit ability 3
R: Unit ability 4
A: Unit ability 5
S: Unit ability 6
D: Unit ability 7
F: Unit ability 8
Y: Unit ability 9
X: Unit ability 10
C: Unit ability 11
V: Unit ability 12
1: Unit item 1
2: Unit item 2
3: Unit item 3
4: Unit item 4
5: Unit item 5
6: Unit item 6
Menus[]
Escape: Menu screen / back / cancel
F1: Compendium screen
F2: Research screen
F3: Quests screen
F4: Factions screen
F5: Quick save
F9: Quick load
Ctrl+S: Save screen
Ctrl+L: Load screen
Ctrl+E: Settings screen
Screenshots[]
PrtScr: Save JPG screen shot
Shift+PrtScr: Save JPG screen shot without HUD
Alt+PrtScr: Save PNG screen shot
Alt+Shift+PrtScr: Save PNG screen shot without HUD
Ctrl+P: Save JPG screen shot
Ctrl+Shift+P: Save JPG screen shot without HUD
Ctrl+Alt+P: Save PNG screen shot
Ctrl+Alt+Shift+P: Save PNG screen shot without HUD
UI[]
Ctrl+H: HUD
Ctrl+U: Unit overlay
Ctrl+Y: Yield overlay
Misc[]
Alt+F4: Quit
Alt+Enter: Full screen
Ctrl+D: Debug panel
Ctrl+T: Scores screen
Ctrl+F: Metrics
Ctrl+R: Refresh (reload modified) data
Ctrl+M: Mixer panel
Ctrl+N: Next music track
Ctrl+MouseButton event: Clear all events (doesn't seem to be working)
Ctrl+MouseWheelScroll: Change time of day