Hey, thanks for trying out the game. We're sorry to hear that you can't get up the foot. We tried on two computers but we don't have any issues.
Were you playing with a controller? Cause some mouse and keyboards seem to give a bit of trouble sometimes.
Also does the tank feel like it's driving rather slowly? You might need to build up enough momentum to get up.
Hopefully, one of those can help do the issue, either that or its a glitch, but we hope that's not the case.
Once again thanks for trying our game out! We hope we can help you play through it.