Suit Reboot

Suit Rebooting is a feature in Crysis 2's Multiplayer, where once reaching Level 50, you can gain a higher rank, but start back at Level 1 and lose all of your progress except your Dog Tags and Promo Content. There are a total of five Reboots possible.

Unlocks

For Rebooting, you unlock five C.E.L.L. gun camos for five guns. Those guns are as follows:

Hammer - First Reboot
K-Volt - Second Reboot
SCARAB - Third Reboot
M2014 Gauss - Fourth Reboot
X-43 MIKE - Fifth Reboot

You also unlock two Dog Tags. One for Rebooting once and one for Rebooting a fifth time.

Trivia

Suit Rebooting can be likened to the Call of Duty series's "prestiging".