Is there anyway to set the screen to x2 on an actual playdate? Pixel art is too small for my eyes.
Unfortunately no. The levels on all none-PC ports are 256x160. Scaling them to x2 won't fit on Playdate's 400x240.
Tenebra 2 uses a much bigger portion of the screen, if you want to give it a go.
https://h4plo.itch.io/tenebra2-pd