The difficulty spike around level 20 is ridiculous, hardest game by far, sans is overwhelmingly fast and spawns right in front of you unpredictably.
The Subspace Emissary 2
A downloadable forum for Windows
Arrow Keys = Move/Look...
Spacebar = Shoot/Reload.
C = Drop Coin...
Only coins can kill the donkey enemy.
Game has jumpscares.
Subspace Emissary 2.exe 74 MB