Thelemite cannot be described differently than ultimate abreaction game. You won’t find any heartbreaking story or great graphics. It’s only about tempo, rapid key pressing and wild fun.
If you know AAA game Prototype then you know what’s going on here. You take a role of a guy who is more than powerful and you literary fly through a city and destroy everything you can. The game is something like limited open world. You can do what you want but to get further you have to fulfill missions. The beginning is about destroying easy targets but as the game goes on the enemies grow bigger, faster and stronger.