Focus on damage and sustain. Get Fire Sword (both levels) and Energy Recharge .
In , progression in Endless Mode is organized by difficulty tiers (sets), each introducing new robot versions and hazards. A common "set" guide for upgrades focuses on maximizing efficiency at each of these stages. Difficulty Tier Upgrade Sets Clone Drone in the Danger Zone by sets
Greatly increases mobility, which is critical for dodging Hammer bots and Spidertrons. Focus on damage and sustain