simply go into the game, press the button next to 1 which is ` and hold it down. next, do the same thing to = and then press tab. you have now entered debug mode but it pauses the game when you do it, simply follow the steps again to unpause. oh and when you go into it type help as a command and it will come up all commmands.

edit: i found a file in the game files called output_log, here is what it says. notice that the top bit is normal. but then it says stuff about me using commands. Initialize engine version: 5.5.0f3 (38b4efef76f0)
GfxDevice: creating device client; threaded=1
Direct3D:
Version: Direct3D 11.0 [level 11.0]
Renderer: Intel(R) HD Graphics (ID=0x406)
Vendor: Intel
VRAM: 1113 MB
Driver: 20.19.15.4531
Begin MonoManager ReloadAssembly
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Tattletail\tattletailWindows_Data\Managed\UnityEngine.dll (this message is harmless)
Loading C:\Program Files (x86)\Steam\steamapps\common\Tattletail\tattletailWindows_Data\Managed\UnityEngine.dll into Unity Child Domain
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Tattletail\tattletailWindows_Data\Managed\Assembly-CSharp-firstpass.dll (this message is harmless)
Loading C:\Program Files (x86)\Steam\steamapps\common\Tattletail\tattletailWindows_Data\Managed\Assembly-CSharp-firstpass.dll into Unity Child Domain
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Tattletail\tattletailWindows_Data\Managed\Assembly-CSharp.dll (this message is harmless)
Loading C:\Program Files (x86)\Steam\steamapps\common\Tattletail\tattletailWindows_Data\Managed\Assembly-CSharp.dll into Unity Child Domain
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Tattletail\tattletailWindows_Data\Managed\UnityEngine.UI.dll (this message is harmless)
Loading C:\Program Files (x86)\Steam\steamapps\common\Tattletail\tattletailWindows_Data\Managed\UnityEngine.UI.dll into Unity Child Domain
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Tattletail\tattletailWindows_Data\Managed\UnityEngine.Networking.dll (this message is harmless)
Loading C:\Program Files (x86)\Steam\steamapps\common\Tattletail\tattletailWindows_Data\Managed\UnityEngine.Networking.dll into Unity Child Domain
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Tattletail\tattletailWindows_Data\Managed\UnityEngine.PlaymodeTestsRunner.dll (this message is harmless)
Loading C:\Program Files (x86)\Steam\steamapps\common\Tattletail\tattletailWindows_Data\Managed\UnityEngine.PlaymodeTestsRunner.dll into Unity Child Domain
- Completed reload, in 0.098 seconds
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Tattletail\tattletailWindows_Data\Managed\System.Core.dll (this message is harmless)
Platform assembly: C:\Program Files (x86)\Steam\steamapps\common\Tattletail\tattletailWindows_Data\Managed\System.dll (this message is harmless)
desktop: 1366x768 60Hz; virtual: 1366x768 at 0,0
<RI> Initializing input.

<RI> Input initialized.

<RI> Initialized touch support.

UnloadTime: 85.787682 ms
Setting up 1 worker threads for Enlighten.
Thread -> id: 2250 -> priority: 1
Write 'help' for a list of commands...

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

Loaded Saved Level: _7_ThereSheIs

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

Loaded Eggs

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

Player Has Collected 20 Eggs

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

Loading Scene Loader

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

Unloading 8 Unused Serialized files (Serialized files now loaded: 0)
UnloadTime: 6.251626 ms

Unloading 596 unused Assets to reduce memory usage. Loaded Objects now: 1895.
Total: 17.503220 ms (FindLiveObjects: 0.168838 ms CreateObjectMapping: 0.207840 ms MarkObjects: 10.494644 ms DeleteObjects: 6.629330 ms)

Developer mode active

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

COMMAND: help

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

Writing all commands recorded:

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'help' - Show all recorded commands

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'clear' - Clears the console

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'god' - Toggle God Mode

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'buddha' - Toggle Buddha Mode (Can get hit, can never die)

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'hacker' - Toggle Hacker mode (macro cheat for testing levels)

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'kill' - Suicide

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'teleport' - Teleport to a PlayerSpawn

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'fb' - Toggles fullbright rendering mode

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'flashlight' - Set carrying flashlight

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'tattletail' - Set carrying tattletail

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'deletesave' - Delete Save Data

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'posteffects' - Set Post Effects

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'quit' - Quit application immediately

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'completelevel' - Complete the current level

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'level' - Load and play a specific level by name

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'levellist' - Prints the list of available levels

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'toggleroof' - Toggles the roof visibility

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'rs' - Set run speed

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'nohold' - Set required hold time for interactables to be 0f

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'cleareggs' - Delete stored eggs

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'getegg' - Collect specific egg

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'screenshotmode' - Allows screenshots by pressing T

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'screenshotupscale' - How many X to upscale screens

(Filename: C:/buildslave/unity/build/artifacts/generated/common/runtime/DebugBindings.gen.cpp Line: 51)

'collecttestitem' - For hud testing

that is just some of it.