create a flashbang effect without a canvas

Hi. I’m making a game where you can choose different kinds of characters, and one of them, when gets “blind” due to a flashbang, can activate a hability to “see” the outline of the enemies. I searched for a lot of tutorials, but all of them suggest using a canvas. How can I add this effect? (It onli activates if you press Q and the flashbang effect lasts for 15 seconds)

Via PostProcessing. You can add the “Color Adjustments” module and increase the exposure via script. You can play with the other settings to get the effect you want.