Challenge: Micromissiles

I'm interested on the theoretical efficiency of micromissiles for combating large lasers.  Not only the lasers must spend time burning each of the missiles individually, they also need to spend a bit of time turning between targets.  My main question now is, can we make this a cost-effective counter, even if our computers can't quite simulate all of the needed missiles?

For this purpose, I want to see how cheap we can make missiles.

Requirements:

1. Minimum delta-v: 10 km/s
2. Minimum acceleration: 1g

Suggested armor scheme: 3 layers of 500 μm of PTFE, spaced by 500 μm each -- but other suggestions are welcome.

Separate categories for base game (no mods or editing limits.txt) and modified (mods and editing of limits.txt).

Entries (no mods):
1. omnipotentvoid -- 29.5 c, 11.4 kg, 10.00 km/s delta v, 22.3 g acceleration, 516000 mm² cross section, F + H combustion engine
2. jtyotjotjipaefvj -- 33.6 c, 22.4 kg, 10.6 km/s, 13.6 g acceleration, 406000 mm² cross section, F + H combustion engine
3. RiftandRend -- 33.7 c, 20.8 kg, 10.0 km/s delta v, 26.0 g acceleration, 273000 mm² cross section, F + H combustion engine
4. siskinedge -- 52.9 c, 9.03 kg, 10.0 km/s delta v, 4.34 g acceleration, 99800 mm² cross section, Methane NTR
5. CatastrophicReEntry -- 53.2 c, 25.0 kg, 10.6 km/s, 20.4 g acceleration, 444000 mm² cross section, F + H combustion engine
6. cyborgleopard -- 64.3 c, 12.2 kg, 10.00 km/s delta v, 3.74 g acceleration, 292000 mm2 cross section, Methane NTR
7. David367th -- 90.2 c, 21.0 kg, 10.00 km/s delta v, 2.71 g acceleration, 134000 mm² cross section, RP-1 NTR (partial front armor)
8. someusername6 -- 102 c, 23.4 kg, 10.3 km/s delta v, 2.26 g acceleration, 75700 mm² cross section, F + CH3 combustion engine
9. concretedonkey -- 121 c, 13.7 kg, 10.2 km/s delta v, 3.18 g acceleration, 90400 mm² cross section, F + H combustion engine
10. morrigi -- 307 c, 47.6 kg, 10.1 km/s delta v, 4.53 g acceleration, 531000 mm² cross section, RP-1 NTR
11. Durandal -- 550 c, 23.3 kg, 10.2 km/s delta v, 5.54 g acceleration, 1.14 m² cross section, HD NTR (carrying 95t nuke)


Entries (with mods):
1. RiftandRend -- 20.6 c, 16.7 kg, 11.0 km/s delta v, 18.4 g acceleration, 313000 mm² cross section, F + H combustion engine (updated graphite aerogel armor thermal conductivity)
2. omnipotentvoid -- 83.5 c, 46.0 kg, 10.2 km/s, 133 g acceleration, 569000 mm² cross section, F + HD combustion engine
3. Rocket Witch -- 105 c, 29.9 kg, 10.5 km/s, 3.59 g acceleration, 273000 mm² cross section, F + Na combustion engine


"There was an attempt" tier:
* Rocket Witch -- 51.3 c, 4.15 kg, 10.2 km/s delta v, 61.5 μg acceleration, 38000 mm² cross section, Neon MPD