Interesting game. Neither too hard or too easy.
For those having trouble heres some quick pointers.
1: On the first level you need to find the Detector ASAP. Then the Adaptor. The Detector will usually tell you if a robot in a room has a part you need. This is vital to avoiding needless battles.
2: Each level up from there has one item on it to find. The Drill, a memory card, the Cutter, and another memory card.
3: on any given play through the layout and robots are the exact same. This is useful if the robot gets scrapped. Save each level and make note of locations.