NOTE: V2 uploaded with sections of the chassis hollowed out to reduce weight (bot was approx 2 grams overweight!).

This is an Antweight (150gram) pusher combat robot which I've called Spike.
This bot was designed as the second of three bots to replace our groups aging loan bots.
It's also perfect for a first time combat robot build, designed with a lot of space inside to fit your parts with little trouble. Check out a build video here:

https://youtu.be/oo4SF2d4Aks 

Parts list:

- Pololu 40x7mm wheel (pair)
- Sub-minature DPDT slide switch
- 3mm LED
- Resistor to suit 3mm LED (depends on preferred colour)
- Dual Way Bidirectional ESC 2S-3S 5A Brushed Speed Controller
- Turnigy Nano-Tech 300mAh LiPo battery (up to 300mAh will fit)
- Microgear Motors (2 of) Low Voltage (6V), 30:1 or 50:1 gear ratio
- Flysky FS-i6 Transmitter with receiver (any transmitter with mixing is suitable)
- M2 self tapping screws (4 of)
- M3 phillips head screws (4 of)
NOTE: Part links aren't provided since they typically expire after a while.
You should be able to find every part through a search engine and/or on eBay.

Assembly:
Print the body, cover and gear motor clamps (2 of).
Cut off the female red connectors on the speed controller. Cut the red wire for the male red connect around the middle.
Solder the motors and power switch to the dual speed controller.
Using a spare female red connector from the speed controller, solder the LED and resistor to the red and black wires.
Plug the speed controller black plugs into the receiver (suggest channels 1 and 2).
Plug the soldered LED connector into the receiver (any channel is okay).
Install all parts into the printed body, secure the motors and motor clamps to the body with the M2 screws.
Plug the battery into the speed controller's male red connector.
Run a spare M3 screw into the printed body to pre-tap a thread for the cover.
Mount the cover and secure with two M3 screws.
Push the wheels onto the motor shafts and test!

Good luck!