It's Not Your Fault (Veteran) (君のせいじゃない 超上級) is the first stage in Unit-13 Strikes!
For a few seconds, nothing spawns. Then, Awakened Eva Unit-13 spawns, with Those Guys being spawned at a light rate. They might not look threatening, but they make it much harder to stall Awakened Eva Unit-13. This stage might only be veteran difficulty, but don’t let that fool you. The boss, Awakened Eva Unit-13, attacks often, allowing it to perma-weaken your cats, as well as perma-freezing them if a cat stays in its standing range without being knocked back. It also knocks back cats and is immune to shockwaves, allowing it to push extremely easily. On top of this, it has Omni-strike hitting all the way up to 1200 range, even being able to hit even Cyberpunk Cat! However, it has one weakness: its standing range is a low 200, which can be exploited by high-DPS Attackers from a distance, however, this makes recovering ground after an attack almost impossible unless your meatshields can survive the 15,000 damage hit AND are immune to Knockback or Freeze.
If you have Mari (Lvl 9+), this stage becomes a joke. (Works also with: Asuka Langley, Eva Unit-00, Eva Unit-01, Eva Unit-02, and Eva Unit-08) Mari even at Level 1 can tank 7 hits from Unit-13 (assuming one has all the EotC treasures). At level 9, Mari has a whopping 240,500 health and does 107,250 damage against Eva Angels, compared to Unit-13’s puny 15,000-damage attack and 600,000 health.
When the battle starts, send Mari. Due to her having a higher range, Unit-13 will never attack and Mari will knock back Unit-13 with every hit. After that, you’ve basically won.