Earth Defense Force: Insect Armageddon

There are 8 levels per armor class. You can reach up to level 5 in normal difficulty, level 7 in hard difficulty and level 8 in inferno difficulty. You do not gain xp in Survival mode. You can theoretically grind out your xp in Chapter 1 of Inferno if you want to focus simply on that task. Considering how many kills are required it may be simpler and less of a headache to just run through the game with each armor class normally. Choice is yours. Also be aware that your xp won't save until you complete the mission. If you fail the mission your xp will be lost.

The following is the xp required for each Level:

• Level 1: Default
• Level 2: 1,500 xp
• Level 3: 11,400 xp
• Level 4: 25,000 xp
• Level 5: 55,000 xp
• Level 6: 138,000 xp
• Level 7: 379,500 xp
• Level 8: 793,500 xp

Additionally each class' weapons are Tiered according to the current xp level. For example: If you are at Level 3 xp then you have access to the Tier 3 Weapons for that class.

Grind Spot:

(Use this grind spot when trying to get up to rank 5)

You can get approximately 3500xp (in normal difficulty) by completing Chapter 3, Mission 4. You'll want to grind this solo so you can get as many of the kills for yourself. Your first big fight in this mission is against a horde of ants and spiders; kill like crazy. Eventually 3 small Hectors will arrive; defeat them. After this fight you move onto the major boss battle. The trick here is to not kill her. An infinite amount of ants, spiders and wasps will spawn as you're attempting to defeat the boss. Kill as many of the minor enemies as you can. You'll earn anywhere from 5-15xp for each kill and there are a ton of them. It takes me approximately 20 minutes to finish this Mission. If you're playing it solo your AI teammates will eventually take down the final boss. Even with them taking her down eventually I'm averaging 3500 xp points from the minor enemy kills.

(use this grind spot to max out at level 8)

Start up Chapter 1, Mission 1 on Inferno. Make sure you are at least a level 5-6. By completing this level solo with the bots off (change bots to off in the options prior to starting the game) you can earn up anywhere from 18,000-22,000 xp in approximately 20 minutes.

If you have a boosting partner that has an armor class upgraded to Level 8 you can speed up your process by having them carry your lower armor classes through Mission 1, Chapter 1 on Inferno. You won't be able to destroy anything because your weapons are too weak but if they have the pesticide gun they can do all of the killing for you and you'll still earn approximately 10,000 xp for objectives. You'll only need to run through it 5 times or so to reach Level 5 and then you can proceed to tackle the grinding yourself with better weapons.