This game is put together really well! The art and the SFX suit each other and the gameplay loop is very smooth.
My critiques are pretty much similar to what other people have said already. Auto-fire would would make the already nice movement feel better. An indicator of when the gun/body/legs stats were getting low would lengthen each play session as players would realize more quickly when they should repair their parts.
Overall, very solid and cohesive entry. :)