private void setHardInformation() {
        textDifficultyHeader.setText(R.string.difficulty_hard);
        textDifficultyDescription.setText(R.string.difficulty_hard_description);
        textValueMaxWave.setText(PreferenceManager.getStatisticsValue(PreferenceManager.Statistics.HARD_MAX_WAVE));
        textValueEnemiesKilled.setText(PreferenceManager.getStatisticsValue(PreferenceManager.Statistics.HARD_ENEMIES_KILLED));