There are 3 main glitches currently used

1. One enemy glitch

To do this, enter the tutorial upon starting the first time trial. Once you reach the part where you take control of the traps, open the menu and select "skip tutorial". Now there will only be one enemy trap in control!

2. Enemy control glitch

There is no setup required for this glitch. While playing time trial, you can still control the enemy players with the keys that are normally used by the second player, I, J, K and L. This allows you to switch traps when using the one enemy glitch, and activate traps when needed.

3. Stretched resolution glitch

Window your browser and make it as thin as possible. Make it even thinner by activating dev tools on chrome, then press Command + Shift + P and search dock, then dock the dev tools to the bottom of the window (at least this is how you do it on mac, should be similar for windows). I recommend stretching the window so you can see the whole stage at the start as this allows you to see yourself, too much stretching can hide the gameplay. It can be hard to see on the left and right hand sides of the screen due to the gui, however it is still possible to tell where you are.