Enjoyed how consistent the theme of this one was, really feels like a Gameboy game early implementation of a twin stick shooter.
I felt the control scheme was innovative to avoid use of the second stick for 'aiming', though I think that this schema could have been better explained, as it took me a moment to work out how to aim my gun properly.
Using a control stick on a controller enables you to aim in the inter cardinal directions - whereas a D-Pad does not. I feel like control stick use was mandatory to my success.
Visually the black slugs could have been contrasted more against the background. Some low detail floor texture might help contextualize the player's movement in the space.
I did feel like I was playing something from the past - which was fun. The game was stable, performed well, and is my first experience playing something from the Pico-8 engine. Good work.