I gave this some good tries but couldnt beat it. Got t last stage and killed 4 enemies, but then I died. Could not find any way to heal except leveling up, also couldnt find any way to switch weapon. The instructions say to use 67890 but I couldnt find a way to pick up weapons.
Only found use in the Swipe ability, couldnt find any way to avoid damage so only way to attack seemed to be to spam attack when in range. The short enemies were hard to see when you hit them, so hard to know when they died or not.