[b]fixed:[/b] [list] [*] frost attack bug with ice ball [/list] [b]changed:[/b] [list] [*] desert map: reduce enemy levelup [*] experience progression, reduce the experience required to level up at higher levels [*] invulnerability is no longer a card, it is part of the game, when you receive a hit you become invulnerable for 2s [*] when upgrading all cards, enemies no longer drop experience gems [/list]