The concept of diving into blood vessels is novel and interesting.
The introduction was well-crafted, and I was quickly drawn into the game's world.
The mechanic of launching your partner is great, as is the sense of tension created by the gradually increasing difficulty.
If I had one complaint, it would be that I sometimes hit a dead end because I couldn't afford the necessary suit upgrades to take on all three missions;
I feel like I could have avoided that situation if I had known about those requirements beforehand.