I thought the game window moving with you was a really cool idea and really fun.
i will say that the attack with the triangle things doesn't feel telegraphed enough since the screen is so small by the time they're on screen it might be too late to react so sometimes those deaths end up feeling cheap (also i think the audio prompt for that didn't play for me but i ran the game on linux through wine so any bugs are probably my fault)
other than that really liked